Which cancer originates from connective tissue?

Osteogenic sarcoma, also known as osteosarcoma, is a type of cancer that originates from connective tissue, specifically the osteoblasts which are involved in bone formation. Connective tissues include various types of cells such as those found in bone, cartilage, and muscle, and they play critical roles in support, binding, and protection of other tissues and organs in the body. Osteosarcoma primarily affects the long bones, but it can also occur in other areas of the body where bone tissue is present.

In contrast, adenocarcinoma is a type of cancer that arises from epithelial cells, which are not considered connective tissue. This type of cancer is commonly found in glandular tissues, such as those found in the pancreas, prostate, and colon. Multiple myeloma is a cancer of plasma cells, which are a type of white blood cell, and therefore does not originate from connective tissue either. Basal cell carcinoma originates from basal cells in the skin and is also categorized as a form of epithelial cancer.

Thus, with the emphasis on connective tissue origin, osteogenic sarcoma conclusively stands out as the correct answer.