Select the option that will improve the highlighted part of the sentence. In case no improvement is needed, select ‘No improvement required’.
My mother looked at Sana and me with her mouth slight openly.

Correct option is D

The correct substitution of the highlighted words is slightly open.
Explanation:
The phrase "slight openly" is grammatically incorrect because "slight" is an adjective, whereas an adverb is required to modify the verb "openly."
The correct adverb form is "slightly open", meaning partially open.
Grammatical Rule Used:
· Adjectives vs. Adverbs: Adjectives modify nouns, while adverbs modify verbs, adjectives, or other adverbs.
· "Slight" is an adjective, while "slightly" is the correct adverbial form.
Example:
· ❌ Incorrect: The door was slight open.
· ✅ Correct: The door was slightly open.