The writer is considering changing sentence 4 (reproduced below) so that it clearly articulates the passage’s overarching claim. By studying this new dinosaur,

The writer is considering changing sentence 4
(reproduced below) so that it clearly articulates
the passage’s overarching claim.
By studying this new dinosaur, paleontologists
believe they can determine the precise function
of its mysteriously heart-shaped tail bones.
Which of the following versions of the
underlined portion of sentence 4 best supports
this goal?

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