Why was losing fertile and good grazing areas serious for Maasai pastoralists?

Correct answer: Because these areas provided better fodder for animals

The direct answer is Option A: these areas provided better fodder for animals. Fertile grazing land has more nutritious grass and other plant food, and it may support herds better than poor or dry land. The reasoning is: livestock eat pasture; good pasture supplies more suitable fodder; adequate fodder helps animals remain healthy, reproduce and produce milk or other useful goods; therefore losing the best grazing areas seriously threatens pastoral life. Option A gives the relevant reason. Option B is wrong because the importance was not that the land was only near the sea. Option C is the opposite: good grazing areas are valuable because they generally have grass or other fodder. Option D is false because livestock require land and vegetation. Exam cue: good pasture supports healthy herds; losing it weakens the whole pastoral economy.