What is one of the functions of gutters and downspouts in relation to moisture control?

Gutters and downspouts play a crucial role in moisture control by effectively draining excess water away from a structure. This system collects rainwater that falls on the roof and channels it away to prevent pooling around the foundation of a building. By directing water runoff away from the base, gutters and downspouts help to minimize the risk of water infiltration, which can lead to moisture-related problems such as mold growth, structural damage, and foundation issues. This function is essential for maintaining the integrity of the building and ensuring a dry, healthy environment indoors.

The other options do not align with the primary purpose of gutters and downspouts. Retaining water would be counterproductive in moisture control, as it could lead to stagnation and potential damage. Creating ice dams is an undesirable effect that occurs when water freezes in gutters, causing blockages and overflow, which gutters are intended to prevent. While gutters may hold some debris, this is not a function they are designed for; rather, debris accumulation is a maintenance issue that needs to be addressed to ensure proper drainage.