As the exoplanet 17 Scorpii b orbits a star 408 light-years from Earth, the gas giant’s gravity causes the star to wobble. In 2020, astronomers observing the wobble—indicated by redshifts and blueshifts in the star’s spectral wavelengths—eventually attributed __________ to the gravitational influence of the previously undetected exoplanet.
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Verbal·Standard English Conventions·Form, Structure, and Sense
mediumWhich choice completes the text so that it conforms to the conventions of Standard English?
A
each
B
these
C
it
D
them