Solution:
The cross-sections in slicing a rectangular based pyramid is shown in the image below
Figure 4 shows the cross-section of a right rectangular pyramid parallel to its base.
The cross-section is a rectangle.
Figure 5 shows the cross-section of a right rectangular pyramid through its apex and perpendicular to its base.
The cross-section is a triangle.
Figure 6 shows the cross-section of a right rectangular pyramid perpendicular to its base, not through the apex.
The cross-section is a trapezoid.
Hence,
From the explanation above the final answer is TRAPEZOID
OPTION D is the right answer
