Correct option is A
The correct option is (a).
• Explanation: In the sentence, “loudly” modifies the verb “laughed”.
• It tells us how the child laughed.
• A word that modifies a verb is called an adverb. Therefore, “loudly” is an adverb.
Grammar Rule involved (English/ Hindi):
• An adverb modifies a verb, adjective, or another adverb and often answers questions such as how, when, where, or to what extent.
• जो शब्द verb की विशेषता बताता है, उसे adverb कहते हैं।
• यहाँ “loudly” बताता है कि child कैसे laughed.
Meanings of other options:
• Verb – A word showing action or state (क्रिया)
• Adjective – A word describing a noun or pronoun (विशेषण)
• Noun – A word naming a person, place, thing, or idea (संज्ञा)
So the correct answer is (a)