Which zone undergoes the least amount of change in a given day resulting in a high level of biodiversity

The answer is Middle intertidal zone

Explanation:

Middle intertidal zone is the region that is higher than water level at low tide and underwater at high tide. The well-known area also includes steep rocky cliffs, sandy beaches or wet lands. The area can also be a narrow strip. Organisms in this particular zone are not well adapted due to severe temperature and long periods of dryness. This results in a high biodiversity.