Answer:
A. Process of preparing the public to bring specific criteria to mind when evaluating a politician or issue.
Explanation:
In psychology, 'Priming' is a term used when referring a process of preparation through the input of a stimulus on an individual, expecting then results related to this stimulus.
Regarding the question, the public is being prepared for upcoming political events, and delivery of a specific set of opinions is expected as a result of this preparation. The process of preparation involves a stimulus being applied in the public, and a particular response is expected from them (their criteria), as both the stimulus and the result have a planned association.
