Your title depends on what your text and reasons are specifically about and what the information you are given is, however I would choose whichever one fits your information the best. However, they all are talking about bicycles. I would most likely choose the health benefits of bicycling.
Realize, had forgotten, buy, get (not got)
It is comparing two things without using like or as so it is a Metaphor
The answer is A. Conflict
