1.

Kevin would prefer studying ...

  video to photography.
  photography to video.
  video to a language course.

2.

They finally decided to take ...

  a language course.
  an art class on photography.
  a course in the art of bonsai.

3.

The course they chose ...

  requires special equipment.
  does not require special equipment.
  only requires a garden.

4.

They decided to take the course because  ...