A. 66 ft.3
B.80 ft.3
C.128 ft.3
D.256 ft.3
Please answer thank you!:)

Step-by-step explanation:
Volume of the shown figure would give the idea of amount of plaster required to give the shapes.
Volume of the small box = 1×1×2= 2ft³
Volume of the big box = 4×4×4=64ft³
Total vol of the model = 64+2=66ft³
optionA