 
 <translate> A dolphin has a smooth, thick layer of skin that does not contain oil glands for hair.
The final answer: Sentence B. <ibo> Akpụkpọ ahụ́ dolphin na-adị larịị ma dị larịị nke na-enweghị mmanụ ndị na-eme ka o nwee ntutu. Azịza ikpeazụ ya bụ nkebi ahịrịokwu B. 