Correct option is C
Option (c) "The Taj Mahal is an iconic building. Visiting it is an experience worth remembering forever." is the correct answer. This statement is grammatically correct and appropriately uses the article "the" for the well-known monument "The Taj Mahal" and "an" before "iconic," which starts with a vowel sound.
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Grammatical rule used: Proper nouns like "The Taj Mahal" that refer to unique entities should be preceded by the definite article "the." Additionally, "an" is used instead of "a" before words that start with a vowel sound to ensure smooth pronunciation.
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Example: The Eiffel Tower is an impressive structure.