Select the most appropriate meaning of the given idiom.

Against the clock

In a great hurry, as fast as possible

The most appropriate meaning of the idiom "against the clock" is in a great hurry, as fast as possible. It is used to describe someone who is doing something as quickly as they can, usually because there is a time limit. The idiom comes from the idea of racing against a clock, or trying to finish something before the time runs out.

The other options are not correct.

• Running faster with a clock in hand: This is not the same as against the clock.
• Running faster without a clock: This is not the same as against the clock.
• Race with others to win: This can be part of against the clock, but it is not the whole meaning.