Passage Summary: Kids who watch a lot of TV tend to be heavier, so the author thinks that when interactive TV comes out, obesity will go up.

Conclusion: The introduction of interactive television will lead to higher rates of obesity among North American school children.

Reasoning: There is currently a strong positive correlation between the amount of time children spend watching television and their likelihood of being obese.

Analysis: The author is jumping from a correlation (TV and obesity) to a causal prediction about a new technology (interactive TV). For this argument to hold water, we have to assume that interactive TV won't actually decrease the sedentary nature of the activity. Perhaps the author thinks "interactive" means "running a marathon while watching," but they're betting against it. Look for an answer that ensures interactive TV doesn't somehow break the link between screen time and weight gain.