To be scientific, our observations must be

Sigmund Freud's basic assumption was that ______.

A. sex is the key drive for all behaviors B. biology is destiny, and our entire lives are preordained and predetermined C. many motivations, and protective psychological processes are unconscious D. the ego does not begin to develop until adulthood

In adulthood, when maximum oxygen uptake is measured at rest, what is the usual age-based pattern? When maximum oxygen uptake is measured during exercise, what is the typical age-based pattern?

A) There are equal declines when measured at rest and during exercise. B) There are greater declines when measured at rest versus during exercise. C) There are greater declines when measured during exercise versus at rest. D) There are no declines when measured at rest or during exercise.