A MODU is inclined at an angle of loll. In the absence of external forces, the righting arm (GZ) is __________.

Correct Answer: Option A — zero

At the exact angle of loll, a vessel floats in neutral equilibrium with zero righting arm (GZ = 0). The center of buoyancy shifts directly under the newly positioned center of gravity, resulting in no active righting moment to return the hull upright.