–Do you still remember what the man looks like?

--Yes,           .

A. he is energetic             B. he is of medium build        C. he likes singing

社会监督制度，是指来自国家机关以外的社会组织、团体和公民个人等，依法对公安机关及其人民警察的执法活动进行监督的制度。 ( )