A ball has a diameter of 3.76 cm and an average density of 0.0835 g/cm³. What force is required to hold it completely submerged underwater?
a) Magnitude: 0.63 N; Direction: Upward
b) Magnitude: 0.63 N; Direction: Downward
c) Magnitude: 0.63 N; Direction: None
d) Magnitude: 0.63 N; Direction: Cannot be determined