Final answer:
The most effective version of the text is 'Research from the American Academy of Sleep Medicine proves that sleep-deprived teens,' as it uses definitive language and cites an authoritative source to back up the claim.
Step-by-step explanation:
The best version of the underlined text to introduce evidence supporting the argument that insufficient sleep in teens has negative consequences would be: "Research from the American Academy of Sleep Medicine proves that sleep-deprived teens". This statement uses the word "proves," which indicates a strong correlation determined by the research, suggesting that its findings are definitive and reliable.
Additionally, by referencing the American Academy of Sleep Medicine, the statement appeals to an authoritative source, giving it credibility. Sleep-deprived teens and their susceptibility to negative outcomes, such as obesity, depression, and participation in high-risk behaviors, conveys a direct cause-and-effect relationship established by research.