Can someone help me please!

which of the following sentences is using active voice of the verb

A. sadly diseases have been spread from exotic animals to humans

B. Zoo animals are monitored by the U.S. department of agriculture

C. A zoo can earn thousands of dollars by selling surplus animals

D. Some exotic pets are purchased by circuses

Respuesta :

Answer:

B. Zoo animals are monitored by the U.S. department of agriculture.

Explanation:

The monitoring of the animals is a concurrent action making it an actives verb.

A: Passive already done

C: Passive not yet done

D: Passive already done and been doing