What created the need for pastoralists to search for new pastures?

Correct answer: Pressure of cultivation, forest reservation and restrictions on old pastures

The direct answer is A: cultivation, forest reservation, and restrictions put pressure on old pastures, so pastoralists needed to search for new grazing areas. Pastoralists depend on seasonal movement and available grass and water for their animals. Step by step, when land that was earlier open for grazing was brought under cultivation, reserved as forest, or closed by colonial rules, the usable grazing area became smaller. Animals still needed fodder, so pastoralists had to change routes, timing, or destinations and look for other pastures. Option A is correct because it identifies the connected pressures that reduced access to traditional grazing grounds. Option B is wrong because the problem was not expansion of all pastures; many accessible areas were reduced or restricted. Option C is wrong because animals continued to need fodder. Option D is wrong because abundance of sea routes has no direct relation to grazing land or pastoral movement. The exam cue is: shrinking pasture plus colonial restrictions led to route changes and adaptation.