Answer:
Option a) dodecahedron
Explanation:
we know that
case a) Dodecahedron
it is a polyhedron that has 12 faces (from Greek dodeca- meaning 12). Each face has 5 edges (a pentagon)
case b) Octahedron
it is a polyhedron that has 8 faces (from Greek okto- meaning eight).
case c) Icosahedron
it is a polyhedron that has 20 faces (from Greek icos- meaning twenty).
case d) Terrahedron
it is a polyhedron composed of four triangular faces (from Greek tetra- meaning four).
therefore
The answer is dodecahedron