2 issues is the lack of caution, causing fuel spread. In such cases, this is caused by the things that fuel. The fire, which is burning or flammable when exposed to heat dispersal, it would be the cause of the fire.
The second is the lack of care makes the fuel distribution. In such cases, this is due to make the fuel. The substance is combustible or noncombustible fire spread when exposed to heat, it will be the cause of the fire.
2 point is carelessly applied to fuel spread. In such cases, this is due to make things as fuel. A substance or burning fire fire spread when in contact with the heat will cause the fire.