Which one of the following statements concerning clothing for cold-weather physical activity is most accurate?
a. wear multiple layers of thin clothing.
b. layers next to the skin should be made of cotton.
c. wear light-colored clothing instead of dark-colored clothing.
d. wear a single layer of warm clothing.

Option A

Explanation:

The most important concern about cold weather is that one should keep themselves from from inside and outside. If physical activity is required in winter season then the layers on the body should be multiple thin layers.

The reason being that multiple layers trap air in between the layers acts as an insulator. The layer removed will reduce the amount of heat and coll down the body.

Multiple layer of the clothing allows breathing as there is sweating at the time of physical activities. One by one layer of clothing can be removed as per need during the time of physical activity.