Correct option is D
Option (d) is the correct meaning of the given idiom.
Hold the fort: To take care of a place or situation while someone who usually manages it is away. It implies temporary responsibility in the absence of the main person. (किसी की अनुपस्थिति में जिम्मेदारी संभालना)
Example: While the manager was away on vacation, I held the fort at the office.
Other related idioms and their meanings:
·
Pick up the slack: To do the work that someone else has stopped doing.
·
Stand in for someone: To temporarily take someone else's place.
·
Man the post: To be present and in control at a designated place.