Answer:
D. People could travel from place to place to exchange goods that led to seasonal markets.
Step-by-step explanation:
A. The answer doesn't state the word travel, during the Neolithic Revolution the main topic was traveling and immigration.
B. Basically the same as a, though it does talk about food and expansion, it doesn't still talk about traveling trade.
C. Once again, it's not political whats going on during this revolution, it's about traveling trade.