Which type of maintenance performs the function of removing larger debris from the pool?

Skimming is the process specifically designed for removing larger debris from the surface of the pool water. This maintenance task generally involves using a skimmer net or a similar tool to collect leaves, insects, and other floating debris to keep the pool clean and visually appealing. Regular skimming helps prevent debris from sinking to the bottom, which can complicate cleaning and affect the water's clarity and quality.

The other options serve different purposes in pool maintenance. Brushing focuses on adhering to the pool’s surfaces, removing algae and dirt that attach to walls and floors, promoting a clean environment but not specifically targeting surface debris. Vacuuming is aimed at removing dirt and debris from the bottom of the pool rather than the surface, and it usually requires a more thorough setup, such as a vacuum head connected to a hose. Chemical balancing refers to the maintenance of water chemistry, ensuring proper pH and chlorine levels, which is essential for pool health, but does not address the physical cleaning of debris. Thus, skimming is uniquely qualified to handle large surface debris effectively.