Buckminsterfullerene is an allotropic form of
Carbon
Explanation for correct option:
C. Carbon
Buckminsterfullerene:
Explanation for incorrect options:
A. The allotropes of Phosphorus are black, white, and red Phosphorus.
B. The allotropes of Sulfur are yellow rhombic sulfur (α-sulfur) and monoclinic (β-sulfur).
D. The allotropes of Tin are Grey tin (cubic), white tin (tetragonal), and white tin (rhombic).
Hence, the correct option is C. Buckminsterfullerene is an allotropic form of carbon.