|Question 14Verbal

Source Texts

Text
Water boils at around at sea level, but in Butte, Montana (elevation: 5,538 feet above sea level), it boils at around . 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?
explaining
A
explains
B
explain
C
have explained
D