Answer:
I would want their to be a known cure for each and every disease or illness.
Explanation:
The mastery hypothesis: the mere fact that they are exercising makes patients feel like they have achieved something, cheering them up much as learning a new hobby or achieving a certain goal might cheer them up.
That sounds like B to me.
The overall summarization of this selection is that Justin helps Becky mentally prepare for her driving test by being thoughtful. The rest of the answers do not summarize the reading selection or capture the theme.