In higher latitudes where lakes freeze over in winter, how do cool autumn tempe]ratures fish make it through the winter? a-the cooling water slows fish metabolisms down and allows them to go into hibernation in winter. b-water from the bottom of the lake raises and provides oxygen to the cooler waters on the surface. c- cool water at the surface traps nutrients deep in the lake to provide food during the winter. d-the water in contact with the air sinks and mixes with the less oxygenated water in the deeper levels.

C- Cool water at the surface traps nutrients deep in the lake to provide food during the winter.

Explanation:

As the fish have the ability to adapt to the changing temperature and they are generally are cold-blooded animals and the colder temperatures mean a reduction in the metabolic rates of the fish and this slow the numerous process of the digestion, feeding activity and thus they are often classified as cold, warm freshwater species. Atmospheric oxygen is needed for them to survive in the cold and they feed on the planktons and take the nutrients and the minerals from the surface of the and there don't remain so active as the period of the summer and the spring months.