Choose from: i. exoskeleton. ii. thermal insulators. iii. thick filling. iv. a hydraulic system. v. Animal fur. vi. layers of skin. vii. layers of fat. viii. deep water.
Given those answer options, answer the question: Fact 1: Athermal insulator slows the transfer of heat. Fact 2: Heat transfer fluids, such as antifreeze, protect the solar collector from freezing in cold weather. Given the two facts above, what protects things from freezing in cold weather?
A:
ii.