Most plastic will melt and contribute to the fuel load.

• A. Melt
• B. Burn
• C. Crack
• D. Expand

Answer: (A)

When plastics are heated, they typically soften first and then melt, rather than just expanding. That melting turns solid plastic into a liquid that can flow and drip, effectively increasing the amount of combustible material available to feed the fire. These melted drips can spread flame and sustain combustion, making the melted state a key factor in how the fire grows. So describing the behavior as melting best matches how plastics contribute to the fuel load. Expansion, cracking, or simply burning describe other aspects of fire behavior but don’t capture the primary reaction of most plastics under heat.