The diagram below represents a section of undisturbed sedimentary rock. The general location of fossils of several closely related species is indicated.
Species C&D
Species
Species A & B&C
Species A&B
Species A
According to currently adapted evolutionary theory, which is the most probable correct assumption to be made concerning
species A, B, C, and D?
A) A is the ancestor of B, C, and D.
B) D is the ancestor of A, B, and C.
C) B was already extinct when C evolved.
D) C evolved more recently than A, B, and D.