Insolation describes the energy absorbed when sunlight strikes an object; it directly affects temperature, as higher temperatures are caused by increased insolation. Surface absorption is affected by its albedo; high albedo surfaces reflect most of the radiation that strikes it while absorbing the rest; low albedo surfaces reflect small amounts of the radiation that strikes it while absorbing the rest. White surfaces have the highest abledo, at 1 while black ones have an abledo of 0. The following are averages for abledo on each surface:
Ocean, 0.06- a large body of water; water has a lower abledo that land
Grassy land 0.18- grass increases the surface area, so less light is reflected
Sandy land 0.35- reflects more light, and is made up of textured soil containing silica crystals and can reflect more incoming light.
Ice- absorbs the least sunlight, highly reflective; for instance, sea ice can be almost white in color
I think it's C. Because hibernation is usually for animals living in Continental climates. I basically just eliminated the other answers until I got that one. One example for animals living in cold climates burrowing are Arctic Foxes.