To avoid heat stress, one should wear a loose fitted hat. The correct option is B.
What is heat stress?
Heat stress occurs when the body's ability to regulate its internal temperature begins to fail.
In addition to air temperature, factors such as work rate, humidity, and clothing worn while working can all contribute to heat stress.
A loose hat can allow the person to stay protected from heat and hence avoiding heat stress and stroke.
Thus, the correct option is B.
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