Final answer:
To find the total volume of the composite figure made of two congruent rectangular pyramids joined at their bases, calculate the volume of one pyramid and double it. However, the dimensions are not provided, so the exact volume cannot be determined.
Step-by-step explanation:
The question pertains to finding the total volume of a composite figure made up of two congruent rectangular pyramids joined at their bases. To calculate the volume of one pyramid, you would use the formula for the volume of a pyramid, which is V = (1/3) × base area × height. Since the pyramids are congruent and joined at their bases, the total volume of the composite figure would be twice the volume of one pyramid. Unfortunately, the specific dimensions of the pyramids are not provided, which are necessary to compute the actual volume. Without these measurements, we cannot determine which of the options (A, B, C, or D) is correct. The steps to calculate the volume are simple: calculate the volume of one pyramid and then multiply by two to account for both pyramids in the composite figure.