Answer:
Sensory adaptation.
Explanation:
Sensory adaptation is the decrease in attention concerning a constant stimulus. The decrease in attention to this particular and constant stimulus allows the receptors to pay attention to other things. An example of sensory adaptation is when you apply perfume, and you do not smell the fragrance after some time, but others can smell it when they are near you. Your receptors decrease the attention for this constant stimuli and allow you to perceive other smells that are in the air.