Which client has the highest risk for developing skin cancer?

A. A 70-year-old fair-skinned client who works as a secretary: Fair skin increases risk, but a primarily indoor occupation minimizes long-term UV exposure. This client is at increased risk compared to darker-skinned individuals but not the highest overall. B. A 25-year-old dark-skinned client whose mother had skin cancer: A positive family history raises susceptibility, but darker skin provides protection against UV damage. This combination increases risk but is not as high as prolonged occupational sun exposure in fair-skinned individuals. C. A 65-year-old fair-skinned client who is a construction worker: Fair skin plus decades of outdoor occupational sun exposure creates the highest cumulative risk for skin cancer. Chronic UV exposure is the leading preventable cause, making this the most concerning. D. A 16-year-old dark-skinned client who tans in tanning beds once a week: Tanning beds significantly increase melanoma risk, but younger age and protective skin pigmentation reduce cumulative lifetime exposure so far.