ANSWER
[tex]C.\text{ }189\text{ }cm^3[/tex]EXPLANATION
We want to calculate the volume of the rectangular prism.
The volume of a rectangular prism is given by:
[tex]V=L*W*H[/tex]where L = length
W = width
H = height
Therefore, the volume of the rectangular prism is:
[tex]\begin{gathered} V=9*7*3 \\ \\ V=189\text{ }cm^3 \end{gathered}[/tex]The answer is option C.