The correct response is:
the volume of the prism is 1/3 the size of the volume of the pyramid.
This is because the volume of a pyramid is calculated as \((1/3) \times \text{Base Area} \times \text{Height}\), while the volume of a prism is calculated as \(\text{Base Area} \times \text{Height}\). Therefore, for congruent bases and the same height, the volume of the prism is three times greater than that of the pyramid.