What is one of the purposes of mulches in landscaping?

• A. To reduce air quality
• B. To enhance soil erosion
• C. To maintain soil moisture
• D. To promote weed growth

Answer: (C)

One of the primary purposes of mulches in landscaping is to maintain soil moisture. This is achieved by acting as a barrier that reduces evaporation from the soil surface. When mulch is applied, it creates a protective layer that helps keep the soil cooler and retain water, which is crucial for plant health, especially in dry conditions. By conserving moisture, mulches can support plant growth and reduce the need for frequent irrigation, making them an important element in water-efficient landscaping practices.

In this context, the other options do not align with the beneficial roles that mulches play. For instance, reducing air quality and promoting weed growth would be contrary to the main purposes of mulching in a landscape design focused on health and efficiency. Additionally, enhancing soil erosion contradicts the function of mulch, as mulches are actually used to protect soil from erosion caused by water and wind by keeping soil particles in place.