# Which below has both a definite shape and volume?

$\begin{array}{1 1} a)solid \\ b)plasma \\ \text{c)both a and b} \\ \text{ d)none of the above} \end{array}$

Plasma has both definite shape and volume.A plasma is a hot ionized gas consisting of approximately equal numbers of positively charged ions and negatively charged electrons. The characteristics of plasmas are significantly different from those of ordinary neutral gases so that plasmas are considered a distinct "fourth state of matter."