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

Which of the following definitions best describes 'testosterone biosynthetic process'?

A. Any process that increases the frequency, rate or extent of the chemical reactions and pathways involving macromolecules, any molecule of high relative molecular mass, the structure of which essentially comprises the multiple repetition of units derived, actually or conceptually, from molecules of low relative molecular mass.
B. The chemical reactions and pathways resulting in the formation of testosterone, an androgen having 17beta-hydroxy and 3-oxo groups, together with unsaturation at C-4 C-5.
C. Joint that articulates the opercle and interopercle. the concept is paired.
D. The chemical reactions and pathways resulting in the formation of any steroid hormone, naturally occurring substances secreted by specialized cells that affects the metabolism or behavior of other cells possessing functional receptors for the hormone.

Answer: The chemical reactions and pathways resulting in the formation of testosterone, an androgen having 17beta-hydroxy and 3-oxo groups, together with unsaturation at C-4 C-5.