Fill in the blank with the most suitable word.
We won an unprecedented pardon from ______ -President Karzai, and Gulnaz was freed.

Correct option is A

The correct option to fill in the blank is (a) then.
Explanation: The word “then” is used as an adjective before a title to indicate a previous holder of a post. (Hindi: उस समय के)
Example: The then Prime Minister addressed the issue.
Why other options are incorrect:
· (b) at time: Incorrect phrase; grammatically invalid
· (c) those: Refers to plural – doesn’t fit the sentence
· (d) later: Refers to future or unspecified future time, not suitable here
�� Information Booster: “Then-President,” “then-Minister” – use “then” to indicate position at a specific past time.