Why was reducing herd size after pasture decline not merely weakness but a strategy?

Correct answer: It was a practical way to maintain herds with fewer resources

The correct answer is A. When grazing land shrinks, a very large herd may require more grass and water than the available environment can provide. Selling, culling, or otherwise reducing animals can therefore help a pastoral household protect the health of the remaining herd and preserve limited resources. This is an adaptive decision, not necessarily evidence of helplessness or failure. Option B is incorrect because animals still need food and water; herd reduction only lowers pressure on those resources. Option C has no basis in the question, and option D is false because changing herd size does not immediately create new pasture. The governing concept is pastoral adaptation to ecological and political pressure.