Answer: It explains how people in Alaska maintain heat during cold weather.
Explanation:
As Cynthia Erickson explains, and despite how strange it might sound, the snow keeps the heat inside the house. That´s why most people who live in snowy places, such as those in the village of Tanana, Alaska, do something called banking, which means mounting snow around houses to keep them insulated, significantly increasing the retention of heat.
Im thinking the most reasonable is b and maybe a since the others don't really seem like they could apply.
Hope this helps!
