To determine the fraction of a circle that a sector occupies, we have to divide the sector's central angle by 360^(∘). The circle has two sectors — a white and a shaded portion. Since the white sector's central angle is 60^(∘), the shaded sector's central angle must be 300^(∘).
Therefore, the fraction of the circle that is shaded is 300360, which corresponds to option B.
