The environment factor least likely to affect settlement patterns.
Answer: Option B
Step-by-step explanation:
The environment does not affect the settlement patterns as much as the other options do. The climate, fertility rate and the availability of jobs are very important for a person to settle in an area for earning livelihood, increasing productivity and to suit the proper living condition that it is neither too hot nor too cold. So therefore environment affects the settlement pattern the least as compared to the other options.