Final answer:
Among the listed skin tumors - Basal cell carcinoma, Malignant melanoma, Seborrheic keratosis, and Squamous cell carcinoma - Malignant melanoma is the most likely to metastasize due to its highly metastatic nature and the fact it often goes undetected until it has spread.
Step-by-step explanation:
The skin tumor most likely to metastasize among the given options is B) Malignant melanoma. Melanomas develop from the uncontrolled growth of melanocytes, the pigment-producing cells in the skin. They are characterized as being highly metastatic and can often be difficult to detect before it has spread to other organs.
While other types of skin tumors like basal cell carcinoma and squamous cell carcinoma can metastasize, they are not as likely to do so as malignant melanoma. Basal cell carcinoma, despite being the most common type of skin cancer, typically spreads along the boundary from where they begin in the stratum basale. On the other hand, Squamous cell carcinomas - the second most common skin cancer type - are more aggressive than basal cell carcinomas but do not metastasize as frequently as melanomas.
In contrast to the other skin tumors, seborrheic keratosis is typically benign and therefore does not metastasize.
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