Final answer:
The student is required to analyze and compare one TV, Radio, and Print PSA regarding Substance Use Prevention from SAMHSA, aimed at educating the public about substance abuse prevention.
Step-by-step explanation:
The question asks for an analysis of public service announcements (PSAs) related to Substance Use Prevention from SAMHSA (Substance Abuse and Mental Health Services Administration). SAMHSA provides various types of PSAs designed to raise awareness and educate the public on preventing substance use. To fulfill the task, one would need to visit SAMHSA's website and select a TV PSA, a Radio PSA, and a Print PSA to compare their characteristics and effectiveness in conveying the prevention message.