Final answer:
Melanoma is the most dangerous type of skin cancer due to its high metastatic potential and is responsible for the majority of skin cancer deaths.
Step-by-step explanation:
The most dangerous type of skin cancer is melanoma. Melanoma is a malignant form of skin cancer that originates from the melanocytes in the epidermis. It is known for being highly metastatic and can lead to numerous skin cancer deaths due to its ability to spread to other parts of the body if not treated promptly. In contrast, basal cell carcinoma is the most common type of skin cancer that rarely metastasizes and is often curable with early detection and treatment. Squamous cell carcinoma also has a lower mortality rate compared to melanoma.