Which Statement Accurately Describes a Turbidity Current

Multiple Choice

Which statement accurately describes a turbidity current?

A) a fast, dense current of water and sediment that runs down slopes
B) the result of mid-ocean trenches spreading at a fast rate
C) a phenomenon associated with violent atmospheric storms at sea
D) an event that always occurs at river mouths in shallow water, but does not extend into water more than 50 meters (165 feet) deep