I would choose to argue that social media is bad for teens and children. there’s more you can support this with, such as cyber bullying, safety risks, hackers, etc.
Its B, Because, Present perfect progressive is when you say this, jake has been playing. Past is definitely not, and if past is not it than d wouldnt be it.
Answer:
d cause it uses it as a sport cause champion means like a winner and fencing is a sport