When creating a broadcast you will be given the option to ask a question which you would like your recipients to respond to. It is important to phrase the question correctly in order to elicit useful responses which can be used in managing a situation.
When responding to a question, recipients can reply either yes or no. So it is important to give a question suitable to this response type.
Good examples of questions could be:
Are you safe?
Are you in the office?
Are you outside?
Is it safe to call you?