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

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Working with equipment designed for a billionths of a meter scale, __________

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

A

synthesized selenium nanoparticles used to target harmful cells in the body without damaging other cells have been created by nanoengineers.

B

nanoengineers have synthesized selenium nanoparticles that are used to target harmful cells in the body without damaging other cells.

C

nanoengineers synthesized selenium nanoparticles are used to target harmful cells in the body without damaging other cells.

D

selenium nanoparticles that have been synthesized by nanoengineers to target harmful cells in the body without damaging other cells.