Question

which sentence uses this meaning of vacuum?
vacuum verb to clean with a device that sucks air
the chemist pumped the air out of the small glass chamber and turned it into
a vacuum.
guests will be here in five minutes, so wed better vacuum quickly!

Explanation:

We need to find the sentence where "vacuum" is used as a verb meaning "to clean with a device that sucks air". In the first sentence, "vacuum" is a noun (referring to a space with no air). In the second sentence, "vacuum" is used as a verb, and the context of cleaning quickly (with guests arriving) fits the meaning of using a vacuum cleaner (a device that sucks air) to clean.

Answer:

Guests will be here in five minutes, so we'd better vacuum quickly!