On February 1, 2018, Florida-based researchers Martha A. Scholl, Maoya Bassiouni, and Angel J. Torres-Sánchez compiled climate data from several sites in Puerto Rico’s Luquillo Mountains. At CC1, the site with the highest elevation, the air temperature fluctuated slightly throughout the day, 11:00 a.m. to 16.2°C at 7:00 p.m.
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Verbal·Standard English Conventions·Boundaries
mediumWhich choice completes the text so that it conforms to the conventions of Standard English?
A
from, 18.4°C at
B
from, 18.4°C at,
C
from 18.4°C at
D
from: 18.4°C at,