hello people ~
The combustion reaction which occurs on its own, without any external supply of heat is called as:

A. Explosion

B. Spontaneous combustion

C. Fire

D. Rapid combustion​

Respuesta :

Answer:

B. Spontaneous combustion

Explanation:

If the reaction is happening completely on its own, it is spontaneous!

Hopefully this helps- let me know if you have any questions!