Topic: Preposition,

Best Answer Explained in Below-:

The correct answer to the question "He refrained ___ passing any comment." is B) from, and understanding why requires a look at the usage of the verb "refrain."

In English, "refrain" is generally followed by the preposition "from" when it conveys the meaning of withholding or abstaining from an action. The phrase "refrain from" implies a conscious decision to avoid doing something, which aligns perfectly with the context of not making a comment. For example, we say "refrain from eating" to express that someone is choosing not to eat.

On the other hand, the other options—A) to, C) of, and D) at—do not fit grammatically or semantically in this context. "Refrain to" is not a standard construction in English; "refrain of" would suggest a possessive relationship that is not applicable here; and "refrain at" similarly does not convey the appropriate meaning.

Thus, "He refrained from passing any comment" correctly indicates that the subject opted not to make any comments, emphasizing a deliberate choice to remain silent.