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

Which of the following definitions best describes 'proximal ureter'?

A. A nephron that is part of a mesonephros.
B. One of a group of muscles used in mastication and swallowing. These muscles are attached to the hyoid bone, which is suspended in the neck and forms the base of the tongue and larynx. The muscles are divided into suprahyoid (superior) or infrahyoid (inferior) groups relative to the bone[WP, generalized].
C. Any skeletal muscle organ in the hypodermis / superficial fascia.
D. A segment of the ureter that extends from the renal pelvis to the common iliac artery bifurcation (to form the internal and external iliac arteries).

Answer: A segment of the ureter that extends from the renal pelvis to the common iliac artery bifurcation (to form the internal and external iliac arteries).