where to retire how to travel to work what kind of coffee to drink whether to recycle glass and aluminum
I gave my students this multiple choice question: Research into the total amount of oil available for use around the world can affect what kind of human choice?

Only one answer is correct among these 4 choices:
- where to retire
- how to travel to work
- what kind of coffee to drink
- whether to recycle glass and aluminum

Could you tell me which one is correct?

how to travel to work