We know that the Volume of a prism=a*b*c a----> tall--------> 8 1/2 in=8.5 in b-----> wide-----> 7 in c-----> <span>thick-----> 2 1/2 in=2.5 in therefore V=8.5*7*2.5=148.75 in</span>³------------equal a 148 3/4 in³

the answer is the option <span>c 148 3/4 in³</span>