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Verbal·Standard English Conventions·Boundaries

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At 3,033 years old, CMC 3, a giant sequoia (Sequoiadendron giganteum) located in the United States, was one of the oldest known trees in the world. With over three millennia of climate data in its tree rings, a single tree like this, claims __________ Valerie Trouet, can tell the history of the world.

Which choice completes the text so that it conforms to the conventions of Standard English?

A

dendrochronologist-

B

dendrochronologist,

C

dendrochronologist:

D

dendrochronologist