I belive this is false but im not sure. You should add more info. I cant tell what you are asking me.
D, because all of the other options say that humans do not cause it, or that it is based on false data.
0% because if straight hairline is recessive that means it would need 2. Since, Widows peak seems to be dominant, then there would need to be at least 1 dominant. But, there are both people that have recessive traits.