Which strategy helps you identify the adverb in the sentence ?

The race was completed quickly.

a) where?
b) when?
c) how?
d) to what extent?

I'll be glad to check your answer.

No.

Examples of adverbs that tell to what extent are
She is VERY smart
It was EXTREMELY hot.

Yes. c is correct.

To identify the adverb in a sentence, you can use the strategy of asking the following questions:

a) Where did the action happen? (Answers related to location)
b) When did the action happen? (Answers related to time)
c) How did the action happen? (Answers related to manner)
d) To what extent did the action happen? (Answers related to degree)

In the given sentence, "The race was completed quickly," the question that best applies is "How did the action happen?" This is because the word "quickly" describes how the race was completed, indicating the manner in which it was done. Therefore, the adverb in this sentence is "quickly," and the correct answer would be (c) how.