Concept:Teachers are responsible for pupils’ learning, welfare, and discipline, but not for providing food.Explanation:Ensuring discipline is part of a teacher’s duty in the classroom and school.Making themselves approachable helps pupils feel comfortable seeking help.Inviting parents of troublesome children is a normal way of involving parents in solving behavioural problems.Feeding hungry pupils at school is not a teacher’s responsibility; it is a parental or school welfare duty.Answer:D. feeding hungry pupils at school