Answer :
Final answer:
A senior rater must observe the ratee for a minimum of 90 days to provide a credible evaluation according to U.S. Army regulations.Thus the option b 90 days is the correct answer.
Explanation:
In the context of performance evaluations and military or organizational leadership, the time required to be someone's senior rater generally refers to the minimum period a rater must supervise a ratee to provide a credible evaluation. According to the U.S. Army's evaluation regulation, a senior rater must observe the ratee for a minimum of 90 days to give a proper senior rater evaluation on the Officer Evaluation Report (OER). Therefore, the answer to the question is, 'How many days is it required to be someone's senior rater?' is b) 90 days.
