Correct option is C
The correct sentence is only I.
Explanation:
· Sentence I uses the correct article “a” before the word "grand", which starts with a consonant sound.
· “are the best possessions of youth” is also correct, as "best" is a superlative adjective that requires the article "the".
· Sentence II is grammatically incorrect because it uses “an” before “grand”, which starts with a consonant sound.
Grammatical rule used:
Use "a" before words that start with a consonant sound and "an" before vowel sounds.
Example: a book, an hour.
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Information Booster: The use of articles is based on pronunciation, not just spelling.