Question

Which can be a positive influence of television? being misled by advertisers learning about a health topic being exposed to poor role models missing exercise opportunities

Answer 1

A positive influence of television in these would be learning about a health topic.
Hope this helped!

Answer 2

A positive influence of television is: learning about a health topic.

EXPLANATION:  Firstly, the other choices are not at all positive outcomes of watching television.(They're rather negative!)
Secondly, learning about a health topic using tv is GOOD because it can help lots of people make good changes in their lifestyle, daily routine, etc.