|Question 13Verbal

Source Texts

Text
On February 1, 2018, a Florida-based research team—Martha A. Scholl, Maoya Bassiouni, and Angel J. Torres-Sánchez—compiled climate data from several sites in Puerto Rico's Luquillo Mountains. At 8:30 a.m., the air temperature was at site CC1, the site with the highest        it had shifted to by 11:00 p.m.
Which choice completes the text so that it conforms to the conventions of Standard English?
elevation and
A
elevation;
B
elevation,
C
elevation, and
D