Nhận biết (M1)

The small celestial body known as 2010 BL4 is expected to have a relatively short lifetime in the outer solar system. Within just a few million years, 2010 BL4 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.

  astronomers modeling of the objects

• B.

  astronomer's modeling of the object's

• C.

  astronomers' modeling of the object's

• D.

  astronomers modeling of the object's