Answer:
Option D
Pyramid
Explanation:
The clause that gave away the answer is "three-dimensional solid consisting of a base that can be any polygon"
Scanning through the options, we can see that the only option that fits the description is the pyramid.
The pyramid is the only three-dimensional shape amongst the options that can take any polygon as a base.
The other options get screened out here.
A cube must have a square base.
A triangular prism must have a triangular base
A rectangular prism must have a rectangular base
Thus, option D: The Pyramid is the correct answer.