Which of the following are true of the background of a composition?

I don't know what exactly you're working on but composition in general is the work of music,art, or literature. Maybe one of your answer choices has some similarity. 

Generally spontaneous human combustion is something that still bewilders some, human combustion happens very rarely and doesn't affect the surrounding areas, so unless you want to set your self on fire, human combustion will remain spontaneous and very rare.

The answer is a true