The poster shows a message from the Centers for Disease Control.

The main purpose of this poster is to explain the reasons why Scott contracted HIV.

share Scott’s personal story about living with HIV.

show that HIV is spreading throughout the population.

encourage the public to support the fight against HIV.

The main purpose of this poster here is to encourage the public to support the fight against HIV.

The answer to this question can be gotten from the message that is contained in red here. His words say lets stop HIV together.

These words are a call to the public and everyone to join hands together to stop the spread of the disease. The poster is asking everyone to get involved.

The people pictured with Scott, shows that the poster is also sending a message against discrimination on those living with the disease.

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D). Encourage the public to support the fight against HIV.

Explanation:

Posters are always designed to serve a specific purpose which primarily involves informing the audience about a particular idea or conveying a significant message to them in an appealing and effective manner.

The given poster from 'Centers for Disease Control primarily aims to 'encourage the audience/public to display their support in the fight against HIV.' In order to make the message more striking and impressive, the author includes Scott's experience which reinforces the idea of 'battling the disease like HIV together with support and sustenance' realistically. Thus, option D is the correct answer.

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