A. Noun
B. Pronoun
C. Interjective
D. Adverb
🧠 Explanation:
In the sentence “He saw his reflection in the water,” “reflection” is a noun, referring to the image seen in the water. Understanding grammatical roles like nouns is key for language learners, as it clarifies sentence structure and meaning. For students or writers, mastering parts of speech improves writing precision and comprehension, making it a fundamental topic in English grammar studies and effective communication.