Task: Class Definition Understanding (ontology: Sciences/Biology)

Which of the following definitions best describes 'odontoblast differentiation'?

A. The process in which a relatively unspecialized cell of neural crest origin acquires the specialized features of an odontoblast, a cell on the outer surface of the dental pulp whose biological function is the creation of dentin.
B. A precursor cell destined to differentiate into smooth muscle myocytes.
C. The process in which a relatively unspecialized cell acquires specialized structural and/or functional features of a neuroendocrine cell. A neuroendocrine cell is a cell that receives input form a neuron which controls the secretion of an endocrine substance.
D. The process in which a relatively unspecialized cell acquires specialized features of an interstitial cell of Cajal. An interstitial cell of Cajal is an intestinal neuroepithelial cell that serves as a pacemaker to trigger gut contraction.

Answer: The process in which a relatively unspecialized cell of neural crest origin acquires the specialized features of an odontoblast, a cell on the outer surface of the dental pulp whose biological function is the creation of dentin.