Q. He did most of his work in . . . . . . . . USA.
✅ Correct Answer: (C)
the
Explanation: Here, the sentence talks about 'USA' as specific place. Since we are referring to specific things, we need to use the definite article 'the'.
Explanation by: Mr. Dubey
Here, the sentence talks about 'USA' as specific place. Since we are referring to specific things, we need to use the definite article 'the'.