As the frequency of the applied AC increases, the reactance decreases✓Bonne réponse
As the frequency of the applied AC increases, the reactance increases
As the amplitude of the applied AC increases, the reactance increases
As the amplitude of the applied AC increases, the reactance decreases
Explication
Capacitive reactance is inversely proportional to frequency, so the higher the frequency the lower the opposition a capacitor presents. This is the opposite of an inductor, and amplitude plays no part in either case.