Question

which of the following would most likely be a cause? a burn mark found on a sofa a plant that grows after a forest fire a spark that sets off a blaze a tree burned down to its stump

Explanation:

A cause is something that makes something else happen. A spark that sets off a blaze is a cause because the spark leads to the blaze (the effect). A burn mark on a sofa is an effect (something that has happened due to a cause like a fire or heat source). A plant growing after a forest fire is a result (effect) of the fire creating conditions for new growth. A tree burned down to its stump is an effect of a fire.

Answer:

a spark that sets off a blaze