Answer:
D
Explanation:
As the size of the capsid expands, the number of faces of the structure increases.
1. A sphere does not have any faces. It is a three-dimensional shape with a curved surface.
2. A cube has six faces. Each face of a cube is a square, and all the faces are congruent and perpendicular to each other.
3. A cylinder has three faces: two circular bases and one curved lateral surface connecting the bases.
4. A tetrahedron has four faces. It is a three-dimensional shape with four triangular faces that meet at a common point.
Based on the information given, the option that matches the statement is D. Tetrahedron, as it has an increasing number of faces as the size of the capsid expands.
