Whose theory of motivation is being summarized: The purpose of behavior is to serve the satisfaction of bodily needs. If need-based energy accumulates unchecked over time, motivation arises as a sort of emergency warning system in the form of psychological anxiety that signals action needs to be taken. Once action is initiated, both bodily need and psychological anxiety are quieted:_________
A. Descartes’ mind-body dualism
B. Freud’s drive theory
C. James’ instinct theory
D. McDougall’s instinct theory