You want to choose a Gaussian surface of simple symmetry. Explain why a spherical surface of radius r centered on the center of charge is more appropriate than a cubical surface.
a) A spherical surface allows for easy calculation of the total flux.
b) A spherical surface minimizes the complexity of the electric field calculations.
c) A spherical surface ensures symmetry of the electric field.
d) A spherical surface guarantees uniform electric field distribution.