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Verbal·Standard English Conventions·Form, Structure, and Sense

hard

At the Chicxulub asteroid impact crater in Mexico, the presence of many fossilized microbacteria, which seem to have thrived there despite the extreme heat that persisted after the Chicxulub impact, __________ claims that bacteria are among the planet’s most resilient organisms.

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

A

reinforce

B

have reinforced

C

reinforces

D

are reinforcing