Which passage from the article best supports the notion that curiosity plays a role in invention?
A. Small mishaps can lead to world-changing
innovations
B. A nursery school teacher, Zufall found her young
charges loved shaping the moldable, non-toxic
substance into anything that they could imagine.
C. As he worked, he noticed that the snack in his
pocket was melting for no obvious reason. On
suspicion, he put popcorn in the equipment-it
popped.
D. By the 1950s, the company needed a miracle to
save its business.