Which of the following has has the largest surface area to volume ratio?

For similar volumes, simpler shapes with fewer faces have higher surface-area-to-volume ratios. A tetrahedron (4 faces) has the highest ratio among these options because it's the most 'pointy' shape with maximum surface exposure. A sphere has the lowest SA:V ratio for a given volume, which is why cells and organisms approximate spherical shapes to minimize surface area.