The image shown in the question above presents both an argument and a persuasion.
Explanation:
As we saw in the question above, this poster was used to prevent Americans from speaking secret information that could be used by the enemy and to take the victory of the American people.
The image presents itself as something persuasive, with the phase "lock your lips", showing that it is necessary, that the citizens keep their lips closed, without saying anything that can be used by the enemy forces. The image is also shown as an argument with the phrase "A key to victory", showing that if citizens remained silent, they would have victory in their hands.
The following poster was used to persuade Americans to contribute to the war effort by not sharing any secret information that may help the opponent win the war. 'A key to victory' will tell the reader that this would help America. A key is used and so are lips with a keyhole, thus the visual images would tell a person that they need to 'shut their mouth' and keep quiet so they have a chance of winning the war.
My argument is quite repetitive so if you can change it up a bit then you will get full marks on your test/assignment. Good luck :)
