The prime Minister dedicated . . . . . . . INS Vikramaditya to the nation. A. a B. the C. an D. none

The correct answer is B. the.

The article “the” is used before a singular noun that is specific or unique. In this case, the INS Vikramaditya is a specific aircraft carrier that was dedicated to the nation by the prime minister.

The article “a” is used before a singular noun that is not specific or unique. For example, if the prime minister had dedicated “an aircraft carrier” to the nation, the article “a” would be correct.

The article “an” is used before a singular noun that begins with a vowel sound. For example, if the prime minister had dedicated “an airplane” to the nation, the article “an” would be correct.

The article “none” is not used before a noun.