What is an example of an incendiary cause of wildfires?

An incendiary cause of wildfires refers to a situation where a fire is intentionally started or where the ignition source is clearly associated with human actions that can lead to fire. Fireworks usage is a prime example of this because they are specifically designed to produce flames and explosions, which can create sparks capable of igniting dry vegetation, especially in conditions that are conducive to fire—such as drought or windy weather.

The use of fireworks is often regulated or prohibited in many areas precisely because of the risk they pose to starting wildfires. When individuals set off fireworks, the risks increase, particularly in natural environments.

The other choices describe potential sources of fire but are not classified as incendiary:

• An unattended campfire can lead to wildfires, but it typically falls under negligence rather than intentional ignition.

• Broken electrical lines may cause fires, but they are accidents rather than intentional acts.

• Sunlight refracting through glass is an example of an indirect fire start and is more about natural causes or freak accidents rather than human-induced ignition.

Therefore, fireworks are categorized as an incendiary cause due to their intentional use and the specific risk they pose to igniting wildfires.