Complete the sentence by choosing an appropriate word from the given options.
He has not _______ returned the money.

Correct option is C

The correct option to fill in the blank is (c) yet.
Explanation:
“Yet” is used in negative sentences and questions to talk about things that are expected to happen.
Here, "has not returned" is a negative sentence, so "yet" is the most appropriate choice. (अभी तक)
Example: He hasn't finished his homework yet.
Explain why other options are incorrect:
· (a) only: indicates limitation or exclusivity (केवल)
· (b) still: suggests continuation of an action (अब भी)
· (d) too: means also or excessively (भी, बहुत ज़्यादा)
Information Booster: “Yet” generally comes at the end of a negative sentence in present perfect tense.