Question

All of the following workers are engaged in tertiary economic activities except
a doctor
a waitress
a fisherman
a police officer

Answer 1

Answer is a fisherman

Answer 2

answer - fisherman

tertiary economic activities provide services to the people (doctors, waitresses, police officers)

however, primary activities involve natural resources and is the first step in production of goods. (fishermen are primary workers as they collect the fish for production)