Which of the following is a necessary condition for starting a campfire?
A) Striking a match.
B) Heating the wood to its combustion temperature.
C) Pouring gasoline on the wood.
D) Focusing the rays of the sun with a magnifying glass.
E) Creating a spark by striking a piece of flint with a piece of steel.

Question

Quizplus · Accepted Answer

Heating the wood to its combustion temperature is necessary to start a campfire. Striking a match (A) or creating a spark with flint and steel (E) can provide the heat needed to start the fire, but heating the wood is still necessary. Pouring gasoline on the wood (C) is dangerous and should never be done, as it can cause a dangerous flare-up. Focusing the rays of the sun with a magnifying glass (D) can also provide the heat needed to start a fire, but is not a reliable method and requires direct sunlight.

Which of the Following Is a Necessary Condition for Starting