Chris always _____ the news on the radio. (A) listens to (B) looks at (C) watches (D) hears
The answer is option A. Why is option D incorrect?
Listening involves attention. A case could be made for D in a specific context: 'When he has breakfast with his parents, Tim always hears the news in the background. But he doesn't take any of it in.' But, given the sentence quoted, A is the only right answer.
Listen is an action that we do purposely.But the action "hearing" is some thing that we don't do purposely. It's some thing that happens very naturally. So we listen to the news except of just hearing. Because it's some thing that we do purposely.