The answer is: Middle intertidal zone which is also known as littoral zone, undergoes the least amount of change
Explanation:
Middle intertidal zone is the area above the water at low tide and underwater at high tide. Moreover, the region that lies between the tide marks may include numerous habitats like starfishes etc. However, due to high temperature and long periods of dryness, organisms in this particular area are not well adapted which results in a high biodiversity.