Improve the highlighted part of the sentence. Choose ‘No improvement’ as an answer if the sentence is grammatically correct.
He released the brake, and the tractor slow moved forward.

Correct option is D

The correct substitution of the highlighted words is (d) slowly moved.
Explanation:
· “Moved” is a past tense verb.
· To describe the manner of movement, we use an adverb — here, “slowly.”
· “Slow” is an adjective and cannot be used to modify the verb “moved.”
Grammatical rule used:
Adverbs modify verbs, adjectives, or other adverbs.
Example:
· Incorrect: She sings beautiful.
· Correct: She sings beautifully.
Information Booster:
Adjectives like “slow” describe nouns. To describe how something is done, use an adverb like “slowly.”