The answer is actually counterclaim not claim
Everytime you come across such information in the article, you can be sure that quoting the percentage of overweight children reinforce the writerÍs position in the article in tht way : It provides a researched fact to support the authorÍs position. The writer can't just include imagined facts, he uses reliable information in order to enrich his opinion. Hope it helps!
1,4,5 are sentences that contain opinions.
