Identify the Adverb in the following sentence:

Do you often go swimming?

often

The correct answer is Option (1) - often

Reasoning:
An adverb is a word that modifies a verb, adjective, or another adverb by telling how, when, where, or how often something happens.

In the sentence —

Do you often go swimming?

The word “often” tells how frequently the action (go swimming) happens.

 Therefore, “often” is the Adverb of Frequency.