Question

Expand the underlined phrase into a clause in the sentence given below:
While she went to the market, Niranjana realized that she left her wallet at home.

• A. NO CHANGE
• B. While going to the market
• C. Once went to the market
• D. After going to the market

Answer 1

The correct option is A NO CHANGE

An adverb clause is a group of words containing a subject and a verb, and it functions as an adverb, by modifying an adjective, verb or an adverb. Adverb clauses generally begin with a subordinate conjunction (since, because, while, etc.)
Generally, while expanding an adverb phrase to a clause, the subject is added and the present participle (verb + ing) is changed into a verb. (If there is an auxiliary/helping verb required, it is added.)
The underlined words form a clause, with the subject "she" and the verb "went". Hence the sentence needs no change and option A is correct.
Option B is incorrect because it is a phrase; it has no subject or verb.
Option C is incorrect because the adverb has been changed to "once" and the subject has been removed.
Option D is incorrect because it is a phrase.
Note: An adverb phrase may or may not contain an adverb, as long as it functions as one.