 
 <translate> Mammals conserve body heat with their hair or fur. Basically, heat is energy. Mammals conserve energy with their hair or fur.
So, the final answer is (C). <ibo> Anụ ndị na-enye nwa ara na-eji ntutu ma ọ bụ ajị anụ ha echekwa okpomọkụ nke ahụ ha. N'ụzọ bụ́ isi, okpomọkụ bụ ike. Anụ ndị na-enye nwa ara na-eji ntutu ma ọ bụ ajị anụ ha echekwa ume. Ya mere, azịza ikpeazụ bụ (C). 