What is fire spread analysis primarily focused on?

Fire spread analysis primarily focuses on identifying fire patterns and movement. This involves understanding how a fire propagates through different materials and environmental factors, which is crucial for determining the behavior of the fire during an incident. By examining the fire's movement, investigators can identify areas of most intense burning, potential points of origin, and how various conditions, such as wind, temperature, and available fuel, influence the fire's spread.

Understanding fire behavior through patterns helps in reconstructing the events during the fire incident, which is essential for accurate fire investigations. This analysis provides insights into how the fire developed over time, which can be pivotal for determining both the cause of the fire and any safety measures that might prevent similar incidents in the future.

Other options may address relevant aspects of fire investigation, such as factors that contribute to smoke or the types of fuel used. However, they do not specifically focus on the movement and patterns of fire, which are central to understanding how fire spreads in a given environment.