v. to stir up or cause trouble
-
fluctuate
-
foment
-
foresee
-
fleeting
B
Correct answer
Explanation
Foment means to instigate or stir up an undesirable course of action, such as trouble or rebellion. Fluctuate means to rise and fall irregularly, foresee means to predict, and fleeting is an adjective meaning lasting for a very short time.