The correct answer is C. psychographic analysis
Step-by-step explanation
Psychography is an area in charge of studying and classifying people based on their beliefs, attitudes, and other psychological criteria. The psychographic analysis is generally used to establish common traits that characterize different groups of consumers, potential voters, or a public target. Therefore, if Sara is preparing a speech to endorse a political candidate, she must use psychography to determine her common values, beliefs, and attitudes and better prepare her speech. So the respected correct is the C. psychographic analysis