Which statement regarding combustion is correct? -A solid fuel must be heated to its flash point for combustion to occur.
-The time required to ignite a fuel is a function of the heat of combustion.
-Solids do not burn; they decompose and release combustible vapors that burn.
-No reaction between a fuel and oxidizer is required for combustion.

I think the first one

Explanation:

rapid chemical combination of a substance with oxygen, involving the production of heat and light.

the transfer of heat by electromagnetic radiation is called thermal radiation . it is usually carried out by electromagnetic waves in an energy range just below the visible spectrum, which is the infrared range.

so the answer would be radiation.

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