Answer: B
Massive amounts of glucose
Credible · National Park Service
The wood frog can freeze nearly solid, with its heart and breathing completely stopping for months. To survive, its liver flushes the body with massive amounts of glucose. This sugar acts as a cryoprotectant, preventing the water inside cells from freezing and bursting, while allowing ice to form safely in the spaces between organs. When spring arrives, the frog simply thaws out and hops away.
Search 'Wood Frog thawing time-lapse' to see this biological miracle in action. Challenge that friend who hates the winter cold — see if they knew a frog can survive being an actual ice cube using pure blood sugar.
