B. To study changes over time
Answer:
The sleeper effect.
Explanation:
As the exercise presents, Jamie heard about a divorce that was published in the RAG MAG, which she does not believe is very reliable. However, over time, she forgot where she heard about the divorce. The fact that she later came to believe the story was true is known as the sleeper effect. The sleeper effect is, as suggested, a psychological phenomenon that relates to persuasion. It is a delayed increase of the effect of a message that is accompanied by a discounting cue. So, in this case, Jamie heard statement X from place A. After some time, she forgot where she had heard it, but the information (statement X) remained in her mind.
The highest point above sea level is an elevation. The difference between the highest and lowest point in an area is a relief.
I believe the answer is: Stimulus enchancement
Stimulus enhancement refers to an exposure toward a certain stimulus that make the observer aware on the relationship between the stimulus and the result. In the scenario above, the new dog is the observer, buddy chasing the lgiht is the stimulus, and Zoe follow in chasing the red light is the result.