That sentence is complete because it has both a subject and a predicate. It is also and independent clause.
A firm decision
or
a solution to a problem
I’m pretty sure that the answer is A. When people are arguing they give reasons of why they’re right, so I would think it’s A. Hope this helped, and sorry if I’m too late!! :D
To make a movement with your head kind of bobbing down? In the sign of disagreement/agreement
They are at the metropolitan museum of art in Manhattan NY.
