What happened once people had a surplus of food? They could be considered a civilization.

They irrigated crops and stopped eating meat.

They began to divide up the labor and do other tasks.

They no longer needed to trade with other societies.

The most likely answer is the third option

Explanation:

it's not option one because you don't need surplus to be a civilization.

it's not option two because a surplus of food isn't just crops.

it's not option four because people still need to trade for other resources.

In conclusion, the most reasonable answer is option three.

there were abundant sources of fuel nearby