Final answer:
Option (B), The primary method of heat loss for a person exposed to cold temperatures and strong wind is convection, as wind increases the convective heat loss from the skin.
Step-by-step explanation:
When a person is exposed to cold temperatures and strong winds for an extended period of time, they tend to lose heat primarily by the process of convection. Convection is the transfer of heat to the air surrounding the skin, where the warmed air rises away from the body and is then replaced by cooler air that is subsequently heated. Especially in windy conditions, convection currents of air remove heat from the surface of the skin more efficiently. Wind increases the rate at which air is moved away, enhancing the convective heat loss and creating a wind chill effect, which can make the air feel colder than it actually is. This is why, in windy and cold conditions, a person will lose heat mostly by convection.