"Using physical gestures to emphasise the points" is the rhetoric device used in speaking.
Option (c);
<u>EXPLANATION:</u>
Rhetoric device is a technique of speaking in which one tries to persuade others by their speech. The other person is convinced by evoking their emotions through speech. It is a very effective type of device to give a logical or emotional appeal.
Among the options, the third statement explains the physical parameters that frame key-points in speaking. Also, while the other statements are using a metaphor, appealing the audience's sense of humour and organising thoughts into a logical pattern is done in writing as well. Thus the third statement justified the effective way of speaking.
Rhetoric is the art of persuasion through communication. It is a form of discourse that appeals to people's emotions and logic in order to motivate or inform.
The example is a metaphor. It means that the hills are dark. Hills usually aren’t actually black. It doesn’t use like or as and it doesn’t use a human quality on a non-human thing.
