A client asks the nurse to look at a mole located on the back. The client tells the nurse that the mole has changed from brown to black and enlarged in size. Which is the priority nursing action?

A. Encourage the client to keep checking the mole with a magnifying mirror: While regular self-monitoring of skin lesions is helpful for early detection, it is not an appropriate response when significant changes in a mole have already occurred. This approach delays necessary evaluation and possible diagnosis of skin cancer.B. Advise the client to see his healthcare provider (HCP) for immediate evaluation: A mole that has darkened and increased in size could indicate malignant melanoma, a serious form of skin cancer. These changes align with the "ABCDE" criteria often used to identify suspicious moles: Asymmetry, Border irregularity, Color change, Diameter, Evolving. Prompt evaluation by a healthcare provider is crucial for early diagnosis and potential life-saving treatment.C. Offer to teach a family member how to monitor the skin around the mole: Although involving family members in health monitoring can be supportive, it does not replace the need for immediate professional assessment when concerning changes in a mole are reported.D. Ask the client if he often spends time outside in the sun without a shirt: Exploring sun exposure is relevant in skin cancer risk assessment, but it is not the priority action in this situation. The immediate concern is the suspicious change in the mole, which requires urgent medical attention.