The Edison Speaking Phonograph Company was established on January 24, 1878, to exploit the new machine by exhibiting it. Edison received $10,000 for the manufacturing and sales rights and 20% of the profits. As a novelty, the machine was an instant success, but was difficult to operate except by experts, and the tin foil would last for only a few playing.
PART A: In paragraph 4, what is the meaning of the word “exploit”?
A - research
B - promote
C - improve
D - defend