What factors contribute to the spread of wildfires?

Answer: B — Dry vegetation and high winds

The spread of wildfires is significantly influenced by environmental conditions, with dry vegetation and high winds being critical factors. When vegetation becomes dry, it acts as fuel for the fire, allowing it to ignite more easily and burn more intensely. High winds can exacerbate the situation by carrying embers to new locations, promoting rapid fire spread and making it more challenging for firefighters to control the blaze. In contrast, humidity and rain generally help to suppress fires by increasing moisture levels in vegetation and the atmosphere. Similarly, cool temperatures and urban areas tend to reduce the likelihood of wildfires since they do not provide the dry conditions or ample fuel that wildfires require. Low temperatures and higher humidity can also create an environment that is less favorable for fire ignition and spread.