Answer:
Option A is the correct answer.
Explanation:
Let A be the base area and h be the height of prism.
Volume of prism = Base area x Height = a x h =ah
Now we have base area of pyramid = Base area of prism = a ( both have same type of base)
Height of pyramid = 3 x height of prism = 3h
Volume of pyramid = 1/3 x Base area x Height = 1/3 x a x 3h = ah
Comparing both volumes, we will get Volume of prism = Volume of pyramid
So their ratio is 1.
Option A is the correct answer.