Concept:Aquatic ecological zones are classified mainly by depth, distance from shore, and tidal influence.
Explanation:Zone II represents the shallow shoreline area that is alternately covered and exposed by tides.
Sunlight penetrates to the bottom here, so plants and algae can grow.
This zone lies between the high-water and low-water marks, which is the littoral zone.
The supra-tidal zone is above the high tide mark and is only splashed by waves.
The pelagic zone is the open water area away from both the shore and the bottom.
The benthic zone is the deepest region, found along the sediment surface at the bottom.
Since Zone II matches the description of the shore area affected by tides, it is the littoral zone.
Answer:C. littoral zone
