Answer:
The claim the author is making in the passage is that watching television does not make a person less intelligent, and in fact, it can be informative.
Step-by-step explanation:
Here's how we can identify the claim:
The passage starts by stating a common belief that TV reduces intelligence.
It then directly contradicts this belief with "but that's not true."
The author then uses evidence from a study to support their claim that TV can be informative.
Therefore, the author is arguing against the stereotype that television makes you less intelligent and suggests it can have an informative value.