Nhận biết (M1)

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.

Which 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,