Why did they change to agriculture in the Neolithic Revolution instead of staying in the Paleolithic Era as hunter gatherers?

When hunter-gathering began to be replaced by sedentary food production it became more efficient to keep animals close at hand. Therefore, it became necessary to bring animals permanently to their settlements, although in many cases there was a distinction between relatively sedentary farmers and nomadic herders.

answer; ///i do believe that the correct answer is (d); ///athens had a small population;

answer; the above statement is (false);