Hyenas are rather small animals, are able to get food through cunning.
A. ,that
B. which
C. that

C. That

Explanation:

Hyenas that are rather small animals, are able to get food through cunning.

The text implies that Hyenas are small animals but are able to get their food in a cunning way.

"That" can be a pronoun, an adverb, an adjective and a conjunction. The plural is "those".

"That" as a pronoun is used to indicate a person, an idea, a state, an event, a time and a remark.

That as used in the passage gives indicate what an Hyena is and how it get its food.

i think its d

hope i can you