. . . . . . . . I was tired I managed to finish the work. A. Yet B. Although C. Still D. But

The correct answer is: Although.

The word “although” is used to introduce a clause that expresses a contrast or concession. In this case, the clause “although I was tired” expresses a contrast with the main clause “I managed to finish the work.” This means that the speaker was tired, but they were still able to finish the work.

The other options are not as appropriate in this context. The word “yet” is used to introduce a clause that expresses a surprise or unexpected outcome. The word “still” is used to introduce a clause that expresses a continuation or persistence. The word “but” is used to introduce a clause that expresses a contrast or contradiction.

Here are some examples of how the word “although” can be used in a sentence:

• Although I was tired, I managed to finish the work.
• Although it was raining, we went for a walk.
• Although I don’t like him, I respect him.