Answer:
The children had an argument.
The first one.
Explanation:
The word "Argument" unlike
argue has no existing e after the u.
The verbal phrase is Unlimited.
It is B Their because it's not your seat, nor is it his seat their is more than one. Nor is it our.
So It is B Their
I think it’s a c then b for the third
Is it an oxymoron? Not sure if this is what you are looking for