For each of the following sentences four alternatives are given. You are required to choose the correct meaning of the idiom or phrase given or underlined in the sentence. To mind one's P's and Q's
A). To be cautious
B). To be accurate and precise
C). To be careful of one's accounts
D). To be careful of one's personality
To be accurate and precise
To mind one's P's and Q's: be precise and careful in one's behavior and speech.