I believe this would be Publisher's name.
Harvard UP is the University's Press. We know for certain this is not the author, book title, nor medium of publisher (that is Print). The city of publication is likely Cambridge.
Answer:
Cars are delayed or stopped because so many people are using the road.
Explanation:
The metaphor is "A drive that should take only 15 minutes can last more than an hour. It makes riding a bike sound a lot better."
It would be C because you are making an educated assumption based on what you have read
