Correct option is A
The correct substitution of the highlighted words is (a)
engulfs them.
Explanation: The pronoun “
it” refers to “human beings” which is plural. Therefore, the verb and pronoun should also be plural. “Engulfs it” is incorrect because it mismatches in number. Correct usage is “
engulfs them”.
Grammatical rule used:
Pronouns must agree in
number and
gender with their antecedents.
Example:
Incorrect – The children enjoyed the party because it was fun.
Correct – The children enjoyed the party because
they had fun.
Information Booster: This kind of error is common when the pronoun does not match the noun it replaces in number or gender.