Which of the following actions helps create defensible space?

Creating defensible space is crucial in mitigating wildfire risks. Maintaining a distance between shrubs and trees is an effective practice because it reduces the potential for fire to spread from ground vegetation to tree canopies. This spacing creates a buffer zone that can limit the intensity of a fire and provide firefighters with better access to defend structures during a wildfire event. Proper spacing may also help in reducing competition for resources among plants, promoting healthier vegetation and making it easier to manage.

In contrast, other options may inadvertently contribute to increased fire risks. Planting clusters of trees around the house can create a fire ladder effect, where flames can jump from tree to tree, igniting nearby structures. Stacking firewood against external walls poses a significant fire hazard, as it provides fuel that can readily ignite and transfer heat to the home. Similarly, using heavy mulch near the home can increase the risk of fire because it is flammable and can easily ignite, leading to a fire's spread toward the structure. Emphasizing proper distancing and maintaining defensible space is vital for wildfire risk reduction.