3. Which Louisiana region was most affected by the glaciation of the last ice age? (5 points) Mississippi Floodplain Region
Terraces Region
Marsh Region
Red River Valley Region

Option A (Mississippi floodplain region) is the right approach.

Explanation:

The proportion of land anywhere along the river which is vulnerable to floods seems to be a floodplain. Throughout this continent, the water table is alluvial, simply means a river has accumulated it. Mississippi Floodplain Region organic dams need to pass this same progressive decline including its river basin, the Swamp, would be beyond the organic Levees.

All other options offered aren't relevant to the situation described. So, the right choice seems to be the one above.

provides that any state or local law that directly conflicts with the U.S. Constitution or federal laws is void.  

Explanation:

The Supreme Court was created by the Constitution.  States create their won courts

Each state has police power inside it borders.

The Constitution established three branches of government.