Television watching should be limited because it has negative influences on teens.
Explanation:
By definition, a Claim is "state or assert that something is the case, typically without providing evidence or proof." Still, a claim is an argument and has to sound convincing and open space for more debate on the matter.
The first option sounds more like an opinion, so does the second option. The last one doesn't really open much for a debate since it has 3 statements to be made already.
The third option is correct because it is a strong statement with an opinion behind it that opens room for explanations and debates.
