Answer:
C - habituation.
Step-by-step explanation:
As the exercise explains, when an infant is repeatedly faced or exposed to a visual stimulus, their interest wanes and look away or refuse looking sooner. This decrease in the infant's responsiveness is called habituation. So, in other words, this is a process in which a response decreases as it's exposure is longer or becomes more repeated. There are times where the response is to completely ignore it. To add another example, it could happen that we have or work with a noisy air conditioner. At first we might hear it all the time but, after some time, we would hear it less often, and then less frequently, and then we might even ignore it's complete existance.