|Question 16Verbal

Source Texts

Text
Water boils at around 212°F at sea level, but in Highland, Utah (elevation: 4,977 feet above sea level), it boils at around 202°F. Food writer J. Kenji López-Alt, who explores the science behind cooking, ________ that lower boiling points at higher elevations "can wreak all sorts of havoc on recipes."
Which choice completes the text so that it conforms to the conventions of Standard English?
explains
A
explain
B
have explained
C
are explaining
D