The four leadership styles (coach, supporter, delegator, and director) can be exhibited by an individual according to the situation that he or she faces, and the level of competence as well as motivation that his or her follower is exhibiting.
Based on the situation described in the question, Rhea’s leading them by explaining decisions and asking for feedback, which means that she’s using (A) Coach leadership style, where she leads to get the best possible results from her employees.