Critical Reasoning

8. Professor Panovich argues that, since dinosaur hearts had multiple chambers like those in modern mammals that dinosaurs, like mammals, were warm blooded. But some modern reptiles also have multiple chambers in their hearts and everyone knows that modern reptiles are cold blooded.
Which of the following, if true, strengthens Panovich's argument?
(A) Structures in dinosaurs that are apparently similar to structures in modern species of mammals do not always serve the same functions that such structures do in modern species
(B) Dinosaurs were so diverse that some species could have been cold-blooded and others warmblooded
(C) Several modern species of animals, some cold- blooded, have hearts with multiple chambers
(D) Multiple heart chambers in warm-blooded animals are caused by factors that were not present when the dinosaurs roamed the Earth; however cold blooded animals could have multiple heart chambers absent current conditions.
(E) The small number of fossilized remains of dinosaurs cannot be assumed to represent the most typical species of dinosaurs

what is the source of this question?

I think there are several typos in this question stem:

8. Professor Panovich argues that, since dinosaur hearts had multiple chambers like those in modern mammals those dinosaurs, like mammals, were warm blooded. But some modern reptiles also have multiple chambers in their hearts and everyone knows that modern reptiles are cold blooded.
Which of the following, if true, strengthens Panovich's argument?

If this is the case then answer is B. B'cos then Panovich is talking about a particular kind of Dinosaurs.

Also, option D seems awkwardly worded.
Multiple heart chambers in warm-blooded animals are caused by factors that were not present when the dinosaurs roamed the Earth; however cold blooded animals could have multiple heart chambers absent current conditions.

gmatmillenium wrote:8. Professor Panovich argues that, since dinosaur hearts had multiple chambers like those in modern mammals that dinosaurs, like mammals, were warm blooded. But some modern reptiles also have multiple chambers in their hearts and everyone knows that modern reptiles are cold blooded.
Which of the following, if true, strengthens Panovich's argument?
(A) Structures in dinosaurs that are apparently similar to structures in modern species of mammals do not always serve the same functions that such structures do in modern species
(B) Dinosaurs were so diverse that some species could have been cold-blooded and others warmblooded
(C) Several modern species of animals, some cold- blooded, have hearts with multiple chambers
(D) Multiple heart chambers in warm-blooded animals are caused by factors that were not present when the dinosaurs roamed the Earth; however cold blooded animals could have multiple heart chambers absent current conditions.
(E) The small number of fossilized remains of dinosaurs cannot be assumed to represent the most typical species of dinosaurs

ohh i dont really understand this question, not because i dont understand the concept of the argument but i dont understand the question it is. does it ask us to support the claim of professor Panovich that dinosaur were warm blood becasue its heart like mammals, had chambers??
if i was right i would choose A