A. Dinosaur tracks show them walking with their feet directly under their bodies, like
s-v Error: them doesn't have any antecedents

B. Dinosaur tracks show that they walked with their feet directly under their bodies, as do
s-v Error: THEY doesn't have any antecedents


C. Dinosaurs left tracks that showed them walking with their feet directly under their bodies, like
meaning error: tracks can't show dinosaurs

D. The tracks that dinosaurs left show that they walked with their feet directly under their bodies, as do
Perfect

E. In the tracks they left, dinosaurs are shown walking with their feet under their bodies, like

Meaning error

This question test the concepts of 'agreement' and 'logical prediction' . Dinosaur is singular noun and cannot be presented by plural nouns (them, their) and non-underlined portion "not extended..." confirms that subject of main clause should be dinosaurs"

Option A & B : we can straight away eliminate as them / they / their are plural pronoun and require plural subject, but dinosaur is singular. So no antecedent

Option C : Here the subject of main clause is "track", which will not agree with non-underlined portion

Option D : Correct choice as plural noun dinosaurs is used, and subject of main clause is dinosaurs

Option E : Passive voice somehow changes the meaning of the sentence