Sphere is the best model for the head of a human being.
A human head definitely doesn't represent a Cone neither a Pyramid.
Now a cylinder is a solid which is circular at its edges and straight in its length which clearly does not model the human head. Now the Sphere, it does closely represent the outside figure of a human head.
Thus Sphere is the best model for a human head.
Therefore option D, sphere is the correct answer.
Learn more about Sphere, refer:
- https://brainly.com/question/26506182
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