Answer:
habituation
Step-by-step explanation:
Kareem no longer responds when his mother yells his name since he has become accustomed to hearing it. He is demonstrating a basic form of learning called habituation. Habituation is the process when an innate response to a stimuli decreases due to the frequent or prolonged repetition of that stimulus. Habituation asserts that humans will ignore a stimuli after prolonged exposure to it.
Kareem no longer responds because he has been repeatedly exposed to his mother yelling his name .