A tumor derived from argentaffin cells in the intestinal tract,bile duct,pancreas,bronchus,or ovary is:

A) neoplasm.
B) anaplasia.
C) neuroblastoma.
D) carcinoid.

Argentaffin Cells

Specialized cells found in the gut and elsewhere, containing granules that can bind silver stains, involved in hormone production.

Carcinoid

A type of slow-growing cancer that can arise in several places throughout the body, most commonly in the gastrointestinal tract.

Neuroblastoma

A type of cancer arising from undeveloped nerve cells, predominantly found in various parts of the body and affecting children more frequently.