Which statement best explains why early humans were nomads. #1. They were curious about exploring new lands.
#2. their farming methods had exhausted the soil.
#3. they were searching for resources necessary to live.
#4. Over population made their living conditions crowded.

3. They were searching for resources necessary to live.

Explanation:

Nomads are people who constantly move from one place to another instead of having a permanent home. Early humans lived this way. They lived in small tribes that consisted of hunter-gatherers and were forced to move often in order to find resources necessary for survival. Many nomadic tribes moved only during the change of seasons as different foods became available.

i think it would be reparing roads  

b. second continental congress