Which of the following factors will not affect a balanced physiology?

a) elevation

b) precipitation type

c) humidity

d) sun exposure

Me with this i need to get the answer quickly.

Practice or pre-exercise theories of play pose the idea that a. play provides children with an opportunity to practice adult activities. b. play is necessary to reenergize human cognition. c. children have too much energy and play will rid them of that energy. d. children are the link between animals and human beings.

Why girls are tan and why they fake tan