Select the most appropriate meaning of the given idiom.

Pull up your socks

To put in extra effort

The most appropriate meaning of the idiom "pull up your socks" is to put in extra effort.

It is used to encourage someone to work harder or to do better. The idiom is thought to have originated from the idea of pulling up one's socks to make sure that they are properly fitted and comfortable, which would allow the person to work more efficiently.

For example, you might say to a student who is struggling in school, "Pull up your socks and start studying harder." This means that you are encouraging the student to work harder in order to improve their grades.

The other options are not accurate descriptions of the meaning of the idiom.

• To lose one's temper: This idiom is more accurately described as "to become angry."
• To play a joke on someone: This idiom is more accurately described as "to trick someone."
• To suspect some foul play: This idiom is more accurately described as "to believe that someone is cheating or being dishonest."