Question

what is the primary purpose of this poster?
to convince the audience to feel a certain way

to convince the audience to discredit a belief

to convince the audience to take an action

to convince the audience to reject an idea

Explanation:

Posters often aim to prompt action (e.g., public health, event participation posters). The option "to convince the audience to take an action" aligns with typical poster purposes (like urging recycling, voting, or health checks). Other options focus on changing feelings, discrediting beliefs, or rejecting ideas, which are less common primary poster goals compared to prompting action.

Answer:

to convince the audience to take an action