The correct answer is D. no article.
The article “a” is used before singular nouns that refer to a general class of things or people. For example, “I like to eat apples.” The article “an” is used before singular nouns that begin with a vowel sound. For example, “I saw an elephant.” The article “the” is used before singular nouns that refer to a specific thing or person. For example, “I saw the elephant that escaped from the zoo.”
In the sentence “Srimukhi has a master’s degree from University of Hyderabad,” the noun “University of Hyderabad” is a specific university. Therefore, we do not use an article before it.
The other options are incorrect because they are all articles.