I’m not entirely sure but the sentence could stop after activities and still make the point. “At the youth center besides sports” doesn’t seem necessary if the claim is computers will raise participation in activities then it can do without.
Answer:
means someone's sarcastic
Explanation:
"That person is caustic," means "That person is sarcastic/mean/harsh." If someone says something "caustically," it means that they are saying something in a sarcastic/hurtful way. Hope this helps. :-)
The answer is: Dad says i'm as stubborn as a mule.
hope this helps!