A solid is cut by a plane that is parallel to its base, forming a two-dimensional cross section in the shape of a circle. Which of the following solids could have resulted in that cross section?
a.rectangular prism
b.right pentagonal prism
c. right cone
d.right hexagonal prism
c. right cone
If a solid is cut by a plane parallel to its base and forms a two-dimensional cross section in the shape of a circle, it means that the original solid had a circular base. The only solid with a circular base among the options provided is a right cone.