Which Situation(s) May Require Government Intervention? I

Multiple Choice

Which situation(s) may require government intervention? I. A local business has made a profit in each of the last ten years.
II) Students are having difficulty deciding whether to go the beach or to go hiking for their class trip.
III) A manufacturing firm on a river is dumping production run off into the water.

A) I and II
B) II and III
C) II only
D) III only