Answer:
Because when you go to a different country and they speak a different language that would be nice to know many languages so that you know how to speak them when you go to a different country.
Explanation:
Thats what I think I hope that helps
It's a complete sentence because It has a comma to break the difference between the two statements.
Answer: I would go with A and C
I'm not 100% sure so i'm really sorry if you get it wrong
