Rhetorical question
figure of speech in the form of a question, asked to make a point rather than to elicit an answer / From Wikipedia, the free encyclopedia
A rhetorical question is a figure of speech in the form of a question. It is a question that is asked in order to make a point: it does not need a reply.[1]
The question is used as a rhetorical device or tool. The question is posed for the sake of persuasion, or to encourage the listener or reader to consider a message or viewpoint.