Question

while grocery shopping, rebecca buys the brands that she has often seen advertised on tv. this could be the result of...
classical conditioning
the mere exposure effect
continuous reinforcement
habituation
shaping

Explanation:

The mere - exposure effect is a psychological phenomenon where people react more positively to something they are exposed to often. In this case, Rebecca has seen the brands often (through TV ads), so she buys them. Classical conditioning pairs a neutral stimulus with an unconditioned stimulus. Continuous reinforcement is a schedule of reinforcement (not relevant here as it's about frequency of exposure, not rewards). Habituation is a decrease in response to a stimulus over time (opposite of what's happening here as she is more likely to buy). Shaping is a process of reinforcing successive approximations to a desired behavior (not related to exposure).

Answer:

The mere exposure effect