Answer:
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.