Question

wharton professors conducted a study where students were given a device to listen to audiobooks only when they went to the gym but were not allowed to listen at any other time. this technique, called \temptation bundling,\ significantly increased the number of times the students exercised each week.
the quotation best supports the inference that people —
look forward to the experience of listening to audiobooks
find it hard to fit listening to audiobooks into their schedules
retain more information from audiobooks if they listen during workouts
prefer audiobooks to other forms of entertainment during workouts

Explanation:

The study used "temptation bundling" where students could only listen to audiobooks at the gym. The fact that this increased exercise frequency implies people wanted to listen to audiobooks but found it hard to fit into their schedules otherwise (so they exercised more to listen). Other options: A is not supported (the focus is on exercise increase, not anticipation of audiobook listening), C has no info on retention, D has no info on preferring audiobooks over other entertainment.

Answer:

B. find it hard to fit listening to audiobooks into their schedules