Answer:
Stopped paying attention or listening to Jack's argument.
Step-by-step explanation:
Cognitive dissonance is a psychological term which refers to a situation consisting of norms, beliefs, behaviour and set of conflicting attitudes.
When cognitive dissonance is in force, it leads to mental imbalance thereby resulting to change in one's belief, behaviour and attitude to cushion and restore the mental balance.
In this instance, lawanda responded to her own cognitive dissonance by stop listening or paying attention to Jack's argument.