Answer:
Video games make people inactive.
There are video games for sports and dancing.
rude
Step-by-step explanation:
A counterclaim is a claim that states the opposite of what the writer is arguing. In this case, the writer is saying that the opposition says that video games involve too much sitting, which tells us that the counterclaim is that video games make people inactive.
The evidence the author provides to weaken the counterclaim is games that involve physical activity, such as dancing or sports related games.
The tone of the rebuttal is rude. The author states that the opposition is "probably old" and that they "don't know very much about gaming," which is another way of calling them uninformed.
Hope this helps :)