Final answer:
Melanoma is the most dangerous type of skin cancer because of its malignancy and high potential to metastasize, even though it is the rarest form. Basal cell and squamous cell carcinomas are less dangerous and are more likely to be cured.
Step-by-step explanation:
The most dangerous type of skin cancer is melanoma. This form of cancer arises in the melanocytes, which are melanin-producing cells located in the stratum basale of the epidermis.
Although it is the rarest type of skin cancer, accounting for less than one percent of all skin cancer cases, melanoma is the most lethal because it is malignant and likely to metastasize. This means that if melanoma is not treated in its early stages, it has the potential to spread to other parts of the body, which can be fatal. On the contrary, the other types of skin cancers like basal cell carcinoma, which is the most common, and squamous cell carcinoma, both have a higher likelihood of cure and are less likely to metastasize.