Concept:A course of action is logical if it directly solves the problem without being extreme or harmful.Explanation:The statement says people are falling sick due to adulterated milk.Course I suggests regular checks and strict penalties. This targets the root cause by catching offenders and deterring future crimes. It is practical and reasonable.Course II suggests a total six-month ban on milk sales. This is too drastic. It would hurt honest sellers and create shortages, without fixing the adulteration issue permanently.Therefore, only Course I logically follows.Answer:Only I follows. Option A.