Free Practice Question
CR · Critical Reasoning
505-555
Assumptions
Recent research in an old quarry uncovered tracks from several Stegosaurus dinosaurs, and the tracks all headed in the same direction. A second set of tracks from the same quarry shows one instance of overlapping footprints, where a juvenile Stegosaurus footprint was stepped on by an adult Stegosaurus. From this one can infer that Stegosauruses most likely traveled in multiple-age herds and that adults of this species cared for their young.
Which of the following is an assumption on which the argument depends?
Which of the following is an assumption on which the argument depends?
Answer Choices
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Many modern herd animals care for their young.
B
Male and female adult Stegosauruses traveled together in the herd.
C
No tracks from dinosaurs other than Stegosaurus were found in the vicinity of the Stegosaurus tracks.
D
The adult dinosaur print was made at the time the juvenile print was made.
E
The existence of parental care has been established for other dinosaur species.
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Explanation
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Difficulty
505-555
Type
CR