"Testes and Ovaries"
Two hormones are primarily responsible for pubic hair during puberty. Androgen and Estrogen, of which are spectively provided by the "Testes and Ovaries". Pubic hair is the bodies attempt of protecting those organs against friction with contact of skin.
It is the first choice, since that (P) is dominant to (p) so yeah Pp will be inflated
The process by which oxygen is taken to the lungs is called Inhalation or Inspiration.
I think it is D for mountains form from the movement of tectonic plates which create volcanoes that erupt and form mountains