Respuesta :
the principal one would use it correctly if this helped give me a thanks :)
Since the noun mandate refers to an official order or commission to do something, the correct sentence tha uses the word "mandate" correctly is the second option. "The principal gave us a mandate to be silent during the guest speaker's talk."
The order in this sentence is to be silent.
Another definitions of mandate are:
1.give (someone) authority to act in a certain way.
2.the authority to carry out a policy, regarded as given by the electorate to a party or candidate that wins an election.