What is the primary danger during the first 3-5 minutes if you are suddenly immersed in cold water? being run over by another boat and drowning icing of your clothes and pfd, reducing your buoyancy involuntary gasping, leading to water inhalation and drowning losing consciousness due to shock and hyperventilation?

The correct answer is involuntary gasping, resulting in water inhalation and drowning.

Involuntary gasping or agonal respiration or gasping respiration refers to an unusual pattern of breathing and brainstem reflex featured by labored breathing, gasping, followed by myoclonus and strange vocalizations.

The feasible reasons may include extreme hypoxia (insufficient supply of oxygen to the tissues), cerebral ischemia, or even anoxia (complete depletion of oxygen).

the answer would be   10%