Final answer:
Basal cell carcinoma is the least dangerous type of skin cancer as it seldom metastasizes.
Step-by-step explanation:
The type of skin cancer that is considered the least dangerous because it seldom metastasizes is basal cell carcinoma. Basal cell carcinoma is the most common type of skin cancer and typically occurs on areas of the body that are most exposed to the sun. It usually starts in the stratum basale and spreads along this boundary, but it rarely spreads to other parts of the body.
Learn more about Skin cancer