Which term refers to an area that can support plants adapted to living in saturated soil?

The term "wetland" refers specifically to areas that are characterized by saturated soils which are capable of supporting various types of vegetation adapted to these conditions. Wetlands are vital ecosystems that can include marshes, swamps, and bogs, each with a unique composition of plant species well-suited to thrive in wet conditions.

This environment plays a crucial role in ecological functions such as water filtration, flood control, and providing habitat for wildlife. Unlike a catch basin, which is primarily a drainage feature designed to collect runoff, or an infiltration basin that facilitates groundwater recharge, wetlands encompass a broader range of biological activity and inherent ecosystem services. Similarly, the heat island effect pertains to urban areas where temperatures are significantly higher than their rural surroundings due to human activities and landscape alterations, without any direct relation to soil saturation.

Therefore, the definition of wetland aligns perfectly with an area that supports plants adapted to live in saturated conditions, making it the correct choice in this context.