Kenya starts to get into the hot tub, but the water feels extremely hot. she stands in the water for a few moments, then slowly eases the rest of her body down into the water. after a few minutes, she feels quite comfortable; the water no longer feels too hot. this decline in sensitivity to a constant stimulus that kenya has experienced is called

The answer is 'sensory adaptation'. This happens when your sensory system senses a constant stimulus. After a short while, your sensory system will respond less, and then won't respond at all. This is to allow adaption to your environment. For example, if you live above a subway system, you will eventually become used to the sound of underground trains and vibration, and eventually you won't notice it at all..