Which of the following is true of motivation?
A) It activates and directs behavior.
B) It is accompanied by physiological arousal of the autonomic nervous system produced in response to a stimulus.
C) It involves the cognitive interpretation of body arousal.
D) It involves a positive or negative conscious experience.

obviously, the latter.

when comparing the cases, what similarities are there in the cases that suggest one person committed these murders?

out of the choices i'd say d the ability to set goals, mainly because to desire to continue you need motivation but it isn't motivation in that part, but setting goals means you have an endgame and you want to reach it which sums up motivation.

absolute strength refers to the maximum force exerted by a body irrespective of body size. relative strength on the other hand is the force exerted by a body in relation to muscle size or body weight.

so the answer is: c. absolute strength measures strength regardless of your body size, while relative strength measures strength adjusted for your weight.