I believe that the answer is A, interest and hospitality. Mrs. Farquhar is happy to serve the soldier and get him a glass of water, while Mr. Farquhar inquires about news about the war.
The answer for your question is 1 bunch of grapes. The reason why i choose this answer is because the grapes would actually fit the people who would eating grapes.
Hope this helps:)
This is a personal question, just write how you would feel if that happened to you.