Reading Comprehension (RC) | Re: Conodonts, the spiky phosphatic remains (bones and teeth composed of c

Please comment on answer as I have not purchased OG to double check my reasoning.

Tone: Evaluate
Organization:
P1: Describe the significance of a discovery that led to some hypotheses.
P2: Describe 2 hypotheses - traditionalists view and paleontologists view. Authors seems to favor paleotologists' view.

Topic: Discovery of fossils
Scope: Development of vetebrate skeleton based on discovery.

1. D
Uncertain between choice B and D.
B. conodonts' teeth were adapted from protective bony scales
Thus,