|Question 17Verbal

Source Texts

Text
Increasing the heat on an uncovered boiling pot of water does not increase the temperature of the water. What increases is the rate at which the water turns to        a pressure cooker pot, though, an airtight seal traps the vapor in the pot, creating pressure that allows the temperature of the water to increase past its boiling point.
Which choice completes the text so that it conforms to the conventions of Standard English?
vapor. With
A
vapor and with
B
vapor, with
C
vapor with
D