A nurse is assessing for cyanosis in a client who has dark skin. Which of the following sites should the nurse examine to identify cyanosis in this client?

A. Dorsal surface of the hand: In clients with dark skin, the pigmentation may mask subtle color changes such as cyanosis. The hands are not reliable assessment sites for detecting oxygenation problems in this population. B. Dorsal surface of the foot: Similar to the hands, the feet have thicker skin and more pigmentation, which makes detecting cyanosis difficult. Peripheral sites are less accurate for identifying central cyanosis in dark-skinned clients. C. Pinnae of the ears: The ears may show some color changes, but due to pigmentation and poor visibility, they are not the most accurate location for detecting cyanosis in dark-skinned individuals. D. Conjunctivae: The mucous membranes, such as the conjunctivae, lips, and oral mucosa, provide the most reliable sites for assessing cyanosis in dark-skinned clients. These areas are less affected by skin pigmentation and reflect changes in oxygenation more clearly.