Question

which of the following would be an adaptation of the rhino to protect itself?
their horns
their loud grunts and calls
their tails

Explanation:

Rhinoceroses use their horns as a physical means of defense against threats. Loud grunts and calls are more for communication (e.g., mating, territory marking) rather than a direct protection adaptation. Tails have minimal role in protection.

Answer:

Their horns