What is the definition of a "firebrand" in wildfires?

A firebrand is defined as a burning piece of material that is carried by the wind and has the potential to ignite new fires. This can be leaves, twigs, or other combustible materials that have been ignited by flames or intense heat and are lifted into the air by the force of the wind. When these firebrands land in a new location, they can start spot fires, especially in dry, fire-prone areas. Understanding the role of firebrands in the spread of wildfires is crucial for effective firefighting strategies and for mitigating the risk of wildfire outbreaks.

Other options describe different concepts that do not apply to the definition of a firebrand. For instance, the base of a fire that burns the longest pertains more to the structure of a fire rather than the mobile embers developed in wildfire situations. A tool for starting controlled burns refers to a method of fire management rather than the materials involved in wildfires. Lastly, fire-resistant materials relate to construction and design aspects that reduce fire risk but do not align with the definition of a firebrand or its implications for wildfire dynamics.