Answer: From what I've heard ,yes!
Explanation:
The answer to the question is (B) decreases food expenses.
Since the individual wants to reduce budget for a short period of time (within the next month) she should reduce his variable expenses – in which from the option is only decreasing food expenses. It is impossible for her to reduce her fixed expenses (rent, for example) and she should most definitely refrain from adding more. It is near impossible to add total income within such a short period of time as well.
I would say that all four answers are correct. Trade and commerce between civilizations really did help to exchange new ideas, spread languages, share new inventions, and make some people rich.