If you were to take a cross section parallel to the base of one of the holding tanks, how would you describe the shape?

Based on the given figure above, if were to take a cross section parallel to the base of one of the holding tanks, we can describe the shape as therefore, a rectangle. Originally, the holding tanks shape is a rectangular prism, but when cutting it in a cross section, you will see that the shape would be rectangle. Hope this is the answer that you are looking for.

It might be B but don’t take my word for it ask someone else