Concept:Coastal areas are low-lying lands that are easily affected by water-related natural hazards.
Explanation:Flooding is very common in coastal areas because these regions are close to the sea.
Heavy rainfall, high tides, storm surges, and rising sea levels can cause seawater to overflow onto the land.
Drought is more common in dry inland regions.
Deforestation occurs mainly in forested areas.
Pollution can happen anywhere and is not a natural hazard that is unique to coastal areas.
Therefore, the most prevalent environmental hazard in coastal areas is flooding.
Answer:D. Flooding