10. if a light reliably signals a food delivery, a rat in a skinner box will work to turn on the light. in this case, the light is a reinforcer.

The correct answer is a. when they started making tools that will them in cultivating lands, they could raise crops and that made them attached to one place for a longer period of time. after that, they started domesticating animals and building their own permanent settlements that resemble the ones we have today.

There’s no map so we can’t you