When you are performing a rescue operation near or in cold water, you should always wear a?

Always wear Personal Floatation Device

Explanation:

A personal flotation device (PFD; also referred to as a life jacket, life preserver, life belt, Mae West, life vest, life saver, cork jacket, buoyancy aid or flotation suit) is a piece of equipment designed to assist a wearer to keep afloat in water.

i think she would gain 18 grams

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