Answer: The correct option is (D) 18 ft³.
Step-by-step explanation: We are given to find the volume of a rectangular prism with edges length 3 ft, 3 ft and 2 ft.
We know that
the VOLUME of a rectangular prism with width w units, length l units and height h units is given by

In the given rectangular prism, we have

Therefore, the VOLUME of the given rectangular prism will be

Thus, the required volume is 18 ft³.
Option (D) is CORRECT.