Will try to give brainliest to whoever answers !

what is the shape of the cross section of the figure that is perpendicular to the rectangular base but does not pass through the top vertex?

a.) a parallelogram that is not a rectangle

b.) a rectangle

c.) a triangle

d.) a trapezoid

 A. I believe is correct

Step-by-step explanation:

The key word here is ‘perpendicular’. Since they say that the cross section is perpendicular to the rectangular base, the cross section will still be a rectangle, just smaller, as long as it does not pass through the top vertex.

Therefore, the answer is (b) a rectangle.

Just a side note: IF the cross section is perpendicular to the base and it DOES pass through the top vertex, then it will have no shape at all, since it will just be a single point.

Let me know if you have any questions.