Topic: Preposition,

Best Answer Explained in Below-:

The correct preposition to complete the phrase "Abstain ___ smoking" is "from." The verb "abstain" specifically means to choose not to do something or to refrain from a particular activity. It is typically used in conjunction with the preposition "from" to indicate what is being avoided or refrained from.

In English, the structure "abstain from" is widely recognized and grammatically correct. For instance, in contexts like health and wellness, individuals may say they "abstain from drinking alcohol" or "abstain from unhealthy foods." This pattern clearly illustrates the action of deliberately choosing to avoid certain behaviors or substances.

The other options—"for," "about," and "with"—do not appropriately convey the intended meaning in this context. "For" implies a purpose, "about" indicates a topic or subject, and "with" suggests association or accompaniment, none of which capture the precise action of refraining from an activity. Thus, "abstain from smoking" accurately reflects the intended meaning of choosing not to engage in smoking.