An animal
can be just as unhappy in a vast area
or in a small one
No error
Answer is Wrong!
Answer is Right!
The correct answer is D. No error.
The sentence “An animal can be just as unhappy in a vast area or in a small one” is grammatically correct. The subject “animal” agrees with the verb “can be” in number, and the prepositional phrases “in a vast area” and “in a small one”
are both necessary to complete the meaning of the sentence.The sentence could be improved by adding more detail. For example,
we could say “An animal can be just as unhappy in a vast area, where it may feel isolated and alone, as in a small one, where it may feel cramped and confined.”