Answer:
Volume of the right rectangular prism = 108 in³
C is correct. 
Explanation:
Rectangular prism with dimensions labeled length of 2 inches, width of 9 inches, and height of 6 inches.
Formula: 
Volume of rectangular prism = L x W x H 
L = Length, 2 inches 
W = width, 9 inches 
H = height, 6 inches
Substitute the values into formula 

 

Hence, The volume of rectangular prism is 108 in³