Answer:
Option B, the area of pasture was nonexcludable and the consumption of the grass was rival.
Explanation:
It is clear from the details that the area of the pasture land was not sufficient for the grazing of all the cows and sheep of the villagers. Hence, due to overgrazing the land parcel soon became devoid of grass due to which there was no more food for the live stock.
Hence, option B is correct