Which description best indicates eutrophic water?

• A. Murky water with substantial aquatic plant growth
• B. Very clear water with little plant growth
• C. Cold, deep water
• D. Water-saturated soil only

Answer: (A)

Eutrophic water is nutrient-rich and highly productive, which leads to abundant growth of algae and aquatic plants and often murky, turbid water. When nutrients like nitrogen and phosphorus are plentiful, plants and algae multiply, making the water cloudy and supporting dense vegetation along the edges. This combination—cloudiness plus lots of plant growth—best indicates eutrophic conditions. In contrast, very clear water with little plant growth signals low nutrients (oligotrophic), cold, deep water doesn’t inherently describe nutrient status, and water-saturated soil is a soil condition, not a water body's nutrient/production level. So the description of murky water with substantial aquatic plant growth is the best fit.