In a typical wet-sump marine diesel engine, oil is drawn from the sump through a suction strainer and delivered under pressure to the bearings by which type of pump?

Why B is correct

NAVEDTRA 14075 §3-3 states that in a typical wet-sump engine, a gear pump draws oil from the sump through a suction strainer and delivers it under pressure through a full-flow filter and a lube-oil cooler to the bearings and other components.