As far as I know, there is no official Mormon doctrine on "choosing your parents before you're born". See, for example: "The Church has no official teaching about whether or not we were able to choose our families before we were born. However, it may be helpful to summarize a few things that we do know. First, people come to earth with specific assignments. For example, Mary was chosen to be the mother of Jesus, Moses was chosen to deliver Israel, etc. Second, in order to perform these responsibilities, it was necessary that people are born at certain times into certain families. For example, Jesus needed to be born of the Davidic royal line and not in a Gentile family. Third, since it would violate the eternal principle of agency, the Lord never forces us into service. Therefore, it is likely we were offered these foreordained callings with their accompanying family situations. We may not have known every detail, but it is certainly possible that we knew some of the major factors." http://www.lightplanet.com/mormons/qa/13.htm Second, according to Mormon belief, those who do not have a chance to receive the gospel in this life will have a chance in the next, so simply being born to non-Mormon parents wouldn't, in terms of Mormon doctrine, reduce your chances of "getting into heaven".

The doctrine you cite is not an official Mormon doctrine, but is rather an apocryphal Mormon doctrine. That is, it is popular among some Mormons, but has no known basis in revelation. It is what we would call a speculative doctrine, or what I might call a folk doctrine. There are probably a few Mormons who you will find who will strongly believe in this doctrine, and may even believe that it is an official doctrine, but they would be misinformed. They should be careful that they do not try to teach such speculative doctrines while giving lessons or talks. (It is largely for this reason that we are counseled to refer to the scriptures often to teach doctrine in our talks and lessons, rather than just extemporaneously citing what we think we have heard before. Still, I'm not terribly surprised that someone reported this idea to you as fact.)

Most of what Mormons believe is not biblical truth. The scrpiture says not to add to or take away from it which make their book wrong.

That is just a theory carried by a few of the members of our church. It has never been verified by church authority, and I personally don't believe we were intellectually capable of making such a monstrous decision, and that the only one who would've been capable is God Himself. I also believe that God is just, and everyone will somehow have an equal opportunity to accept or reject the faith, whether in this life or the next.

"solistics": My account with AB is really screwed up and for some reason doesn't allow me to comment directly underneath questions. Anyway, I want to say that you answered that question amazingly. When I read the question, I was going to answer exactly what you wrote. Amazing answer. The only thing I want to say is this: "FauxLo": I am a convert. Have been for 7 years. Went on a mission to Florida. My mother is Catholic, father Methodist. When I joined the Church, they were so angry. They banned me from the family. Anyway, I have been married to an amazing woman for two years now. She has softened their hearts amazingly. They are very open to the Church. Did I choose this in the pre-mortal life? I don't know, but I know that Heavenly Father chose it, and designed it. He knows me. He knows you. He knows what is best for each of us. I got a chance in this life to have the Gospel bless my life and my family's lives. And like solistics said, there are billions of people that will not get a chance to hear the Gospel on this earth in their mortal lives. We believe that after death all go to the Spirit World. Here, people are judged based on the law they knew. Meaning, we are not punished for what we truly did not know. The fulness of the Gospel is taught here. As spirits, those who did not hear the Gospel in this life, they get a chance in the Spirit World to accept the Gospel. So, I truly do not believe anyone has a leg up on anyone else. I am truly grateful that Heavenly Father knows me, and knew that it was best for me not to be born in the Church. I don't think I would appreciate the Gospel and the Church nearly as much as I do now. I am grateful for my parents. They are amazing. They prepared me, unknowingly, to recognize the Gospel when I encountered it. So, I don't think anyone is risking their chances of not getting into "heaven".

Although this question has been answered quite well, I feel I should add a couple of things here. I was told in my patriarchal blessing that I was blessed to come to righteous parents. And one of my sons was told in his blessing that he chose my wife and I as his parents in the pre-existence. Although this is not common, nor is it taught as a doctrine of the church, but the Patriarch is a Prophet and does receive our blessings by revelation. But even in the Church this choosing of parents or choosing children is not all that common. But can occur in some cases...whew4

If you do choose your parents in the pre existence, who's to say you know what they will be like on Earth? We don't risk not getting into heavon based on our parents. No one on Earth is perfect, so what I'm saying is you getting into heaven depends on you. Maybe everything happens for a reason and some people are meant to have different trials and hardships in thier life. We aren't forced to do anything right. God wants us to choose on our own.

Far too speculative a topic to explore publicly.

Maybe it's because God is sovereign and we're not. OR . . . maybe it's because the LdS doctrine of the pre-existence is unBiblical hooey. Here's a link to a 1840 Minister's Refutation of the the LdS pre-existence doctrine that is quite good: http://www.concernedchristians.com/index.php?option=com_fireboard&Itemid=42&func=view&id=79062&catid=530#79062

AFAIK, there is nothing official on the issue of us choosing our families in the Pre-Existence. However, I believe it to be true in at least a few cases. After I was born, my parents considered the family to be complete, but two spirits visited them and said they were meant for the family, too.

This isnt a Mormon Teaching. The only way to choose your parents would be via adoption, and I am sure this would be after your birth.