Answer:
Habituation.
Step-by-step explanation:
Habituation is a decrease in response to a stimulus after repeated presentations. Responses that habituate include those that involve the intact organism or those that involve only components of the organism. Functionally-speaking, by diminishing the response to an inconsequential stimulus, habituation is thought to free-up cognitive resources to other stimuli that are associated with biologically important events. A simple example of habituation is a new sound in your environment, such as a new ringtone, may initially draw your attention or even become distracting. Over time, as you become accustomed to this sound, you pay less attention to the noise and your response to the sound will diminish.