Correct Answer:
Option C - Prism– A prism is an assembles of masonry units and mortar with or without grout, that is used as test specimen for determining or verifying the compressive strength of a masonry assembles.
C. Prism– A prism is an assembles of masonry units and mortar with or without grout, that is used as test specimen for determining or verifying the compressive strength of a masonry assembles.