Managed fires are used primarily to:

Managed fires are primarily used to control invasive species and establish native plants. This practice, often referred to as prescribed burning, is an important land management tool that helps maintain healthy ecosystems. By intentionally setting fires under controlled conditions, land managers can reduce the prevalence of invasive species that may outcompete native flora, restore natural fire cycles, and promote the growth of native plant species that are well adapted to the local environment.

Controlled burns can stimulate new growth by clearing out dead biomass and ensuring that nutrients are available in the soil, which ultimately supports the regeneration of native plants. This process helps create a balanced ecosystem, as native species typically provide higher value for wildlife, soil stability, and overall biodiversity compared to invasive species.

The other options do not accurately reflect the purpose of managed fires. For instance, enhancing the growth of non-native species would contradict the goal of promoting a healthy, native ecosystem. Similarly, promoting uncontrolled wildfires undermines the strategic benefits gained from managed fire practices. While increasing the soil's nutrient content can occur as a byproduct of managed fires, it is not the primary objective; instead, the focus is more on fostering native plant growth and controlling invasive species.