Select the option that will improve the highlighted part of the given sentence. In case no improvement is needed, select 'No improvement required'.
He knows how bad I wanted a baby.

Correct option is A

The correct substitution of the highlighted words is (a) how badly.
Explanation: The verb “wanted” is an action verb and thus requires an adverb to describe the manner or intensity of the action. “Badly” is the correct adverb form of “bad.” “How bad” is incorrect because “bad” is an adjective, and adjectives modify nouns, not verbs.
Grammatical rule used:
Use adverbs to modify verbs, adjectives, or other adverbs.
Example:
Incorrect – He sings how sweet.
Correct – He sings how sweetly.