The correct answers are working on a history test and solving a sudoku puzzle.
The reason for this is because you can listen to music and don't need to be explicitly conscious - imagine drifting away in thoughts while you listen to music, or do something completely unrelated.
The same goes for riding a bike. Once you know how to ride a bike and know the path where you're going, your attention and explicit consciousness can be allocated somewhere completely else :)
The correct answers are the middle two - because of them require you to be present and attentive of the situation and what you have to do.