" You may also have experienced past traumatic events that helped decide your stated preferences,"
Nonsense. That is a false premise promoted by homophobes, and does not match the experiences of GLBTQ people.
" For many, signs of homosexuality happen early in life; for instance, boys may choose to play with dolls and play house instead of more traditional boyish pursuits, "
Again, such behaviors do not actually correlate with homosexuality.