Which is an accurate description of what occurs when a log burns?

When a log burns, it undergoes a chemical reaction known as combustion, where the organic material reacts with oxygen in the air. This process produces heat, light, carbon dioxide, water vapor, and ash as byproducts. The heat generated causes the log to release volatile gases that ignite, resulting in flames. As the log continues to burn, it gradually turns to ash and charcoal, representing the remnants of the original material.