I think it would be either C or A, but I think C is more right than A
They sent letters to each other a couple of times. Many would agree that there is a classic story of the homosexual tensions bubbling just beneath the surface between Hemingway and Fitzgerald, so maybe there you could find room for jealousy. Both of them had strong perceptions of what it meant to be gay, and they stated how to interact with their gay friends. Perhaps if they had worked together, they could have done more for this, let us call it "project".
Answer:c. income must be earned.
Explanation:
This means one is expected to go to work everyday as stated in their contract and when they get there they need to do their work.
One can not go to work and just sit at the office and discuss current affairs with the colleagues unless it is lunch time.
When one works they get paid ,however when they stay at home and not work or go to work they can not expect to be paid .
B. Good. Put each word into the sentence to see if it fits.