Among the options, the rhetorical device or technique primarily used by propaganda is:
B. Pathos
The three rhetorical devices as explained by Aristotle are ethos, logos, and pathos.
Ethos appeals to the speaker's authority, logos to logic or reason, and pathos to emotion.
The purpose of those devices is the convince the audience of something.
Propaganda relies primarily on pathos. It tries to evoke an emotion from the audience to convince them to do something.
Secondly, it will use ethos, appealing to authority, to what an expert says.
The last choice will be logos, and it is only used when it supports the other devices.
Think, for example, of war propaganda trying to convince people to go to war. War is not reasonable. Asking someone to die is also quite foolish.
In order to convince someone to do it, propaganda would evoke feelings of rage against the enemy, of love and protection towards one's family, etc.
With that in mind, we can choose letter B as the best option.
Learn more about rhetorical devices here:
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