The posterior aspect aka the back or backside (hopefully this image helps)
I believe that the answer is A: Determined by reinforcement
Answer:
sorry but ur question is incomplete.. you have not mentioned that which two respirations are there
A, Andy should increase his activity and exercise levels and add more calories to gradually gain weight. This is the most sustainable and easier to maintain as a lifestyle compared to the other three options. Simply increasing his snacks or exercise until he reaches his target weight is not sustainable. His goal is to reach a healthy weight, and then maintain that weight. Increasing activity builds muscle, and increasing calories gives him energy for the workouts as well as helps him gain some weight.
C- they are just as effective as making your own protein shake at home