Correct option is D
The correct answer is (d) cleaning.
• A non-finite verb is a verb form that does not show tense and does not act as the main verb in a sentence. It typically appears as a verb in the infinitive, gerund, or past participle form.
• In the sentence "This room needs cleaning," the word "cleaning" is a gerund, which is a non-finite verb form derived from a verb but functions as a noun.
• The verb "needs" is a finite verb because it shows tense (present tense).
Grammatical Rule Used:
• Non-finite verbs: These include infinitives (to + verb), gerunds (verb + ing), and past participles (verb + ed).
• Finite verbs: These verbs show tense and agreement with the subject of the sentence.
Meanings of other options:
• (A) "This" – This is a demonstrative pronoun, not a verb.
• (B) "Room" – This is a noun, not a verb.
• (C) "Needs" – This is a finite verb in the present tense.