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

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The small celestial body known as 55576 Amycus is expected to have a relatively short lifetime in the outer solar system. Within just a few million years, 55576 Amycus is likely to migrate into the inner solar system or be destroyed, according to __________ trajectory.

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

A

astronomer’s modeling of the object’s

B

astronomers’ modeling of the object’s

C

astronomers modeling of the objects

D

astronomers modeling of the object’s