Answer:
C) Nature was unreliable.
Step-by-step explanation:
According to Forman, the reason that the match (or another device for starting a fire) was necessary was that nature was unreliable.
Before the match was invented, the man had to rely on nature to get a source of fire. However, that wasn't simple. Sources of fire appeared in dangerous circumstances, such as a volcano eruption or a lightning storm. Then, that fire needed to be carried home and maintained carefully, because wind or rain could put it out. In that case, the man needed to start over and get some more fire, which wasn't an easy task. This is why nature was unreliable, and why depending on it to kindle fire was unpractical for our ancestors.