Answer:
Option C, The faces of all prisms are parallelogram
Explanation:
A prism is a form of parallelogram and all its faces are also parallelogram.
The base of a prism is parallelepiped. The base can be of shape of any polygon such as triangle, square, rectangle etc. while the other faces are parallelograms or rectangles
Hence, it can be said that the faces of all prisms are parallelogram
Option C is correct