In the following question, four alternatives are given for the idiom / phrase printed in bold. Choose the alternative which best expresses the meaning of the bold idiom / phrase.
His friend is a successful businessman. The secret of his success is his being known what o’clock it is in his business.
1). to know how things are
2). to accept a thing hesitantly
3). to get a commanding status
4). to make something known to all

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