The cell membrane is a fluid mosaic, but the degree of fluidity can vary, depending on the environmental conditions The cell is exposed to. which of the following best describes the hydrocarbon tails in a lipid bilayer of an organism that survives at high temperatures?

A.) They are saturated,increasing packing and decreasing fluidity

B.) They are saturated, preventing packing and increasing fluidity

c.) They are unsaturated, ,increasing packing and decreasing fluidity

D.) They are unsaturated, preventing packing and increasing fluidity