Correct option is D
The correct option to fill in the blank is (D) the.
Explanation: The noun "credit" is specific in this context — referring to the particular credit for the school's success, hence "the" is used.
Example: Much of the credit goes to the Principal.
The (हिंदी अर्थ): वह विशेष/निर्दिष्ट
Meanings of the other options:
· B - A: Used before general, non-specific nouns (एक)
· C - An: Used before vowel sounds (एक - स्वर से शुरू होने वाले शब्दों के लिए)
Information Booster: Use "the" before nouns that are specific or previously mentioned.