Solid liquid gas or plasma. Solid would be ice cubes (frozen state), liquid would be the water inside of the glass, the gas would be when you take that same water and place it on a stovetop to bring to a boiling point. (Gas state) and finally the plasma state is when you your gas particles (from the gas state) if you heat the gas particles, they will turn to plasma.
It is a liquid at room temp.
[Xe] 4f14 5d10 6s2
I don’t know how to explain it but that’s what I got
My freind the best anwer would probably be B