Final answer:
The value of V is 24x.
Step-by-step explanation:
The formula to calculate the volume of a rectangular prism is V = lwh, where l represents the length, w represents the width, and h represents the height.
In this case, we are given l = 2, w = 3, and h = 4x. To find the value of V, substitute these values into the formula: V = 2 * 3 * 4x = 24x.
Therefore, the value of V is 24x, which corresponds to option a) in the given choices.