A parallelogram or trapezoid.
No!
A parallelogram or a trapezoid are polygons (2-dimensional). A polyhedron, or 3-dimensional object, with parallel congruent bases is a prism.
A prism. To give it fuller description, an "n-gonal prism" where the "n-gon" refers to the 2-d name of the bases.
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A Prismthe faces are called bases
The figure would be a prism. However, congruent polygons in parallel planes are called bases.
Both a cylinder and a prism can have parallel and congruent bases.
cylinder
Its "bases"