Select the correct word to complete the sentence (use the american the herd of antelope the river when the leader gives the signal. cross crosses

The herd of antelope crosses the river when the leader gives the signal.

Explanation:

"Herd" is a collective noun. Collective nouns are nouns that stand for a whole group as a single entity. These nouns are singular nouns. Apart from herd, some other collective nouns are team, flock, pack, set, etc. In this case, as the word "herd" is treated as singular, the correct verb form we will use is "crosses" (present simple tense of the verb "to cross", in third person singular)