It is advantageous for grazing mammals to gather in groups because groups

A. can make the available food resources last longer.

B. can migrate more easily than individuals can.

C. are more difficult for predators to locate than individuals are.

D. offer greater protection from predation.

In my opinion, the correct answer among the choice given above is option D. It is advantageous for grazing mammals to gather in groups because groups offer greater protection from predation. It protects them because predators will think twice in nearing the group because it is outnumbered.