Final answer:
Sarcoma is not a type of skin cancer, while melanoma, basal cell, and squamous cell are.
Step-by-step explanation:
The correct answer is sarcoma.
Sarcoma is not a type of skin cancer. It is a type of cancer that develops in the connective tissue, such as bones, muscles, tendons, and blood vessels.
On the other hand, melanoma, basal cell, and squamous cell are all types of skin cancer.
Learn more about Types of skin cancer