To minimize risks to their reputations, companies try to choose endorsers who are

household names

extremely charismatic

least likely to drop in fan approval

just starting their careers

Answer is the third option i.e. Least likely to drop in fan approval.

Explanation:

To minimize risks to their reputations, companies would choose such personalities who may influence and are able to grasp the attention of the prospective customers and are least likely to drop their fan approvals.There are people who are popular enough due to some controversies involved with their names and thus, they can divert the crowd in opposite direction rather attracting them. Therefore, people who are attractive, have influencing power in their personality and also have great positive fan base. These people are least likely to drop in fan approval.

answer; test-retest;

the third answer is correct.