What would be the meaning of a nonzero y intercept to a graph of total mass versus volume?

It would imply the object has some volume but 0 mass which isn't possible. Negligible masses with volumes can be considered however absolutely 0 mass really means the object doesn't exist at all. Thus, showing the graph is wrong.

Your answer is c. explanation: plasma  is the fourth state of matter, derived from the gaseous state of matter.  plasma  can contain free  electrons  and/or  ions. while  plasma is never neutral, it can either be positively or negatively charged.  gases, however, are electrically neutral.