The first electric generators used direct current, so they needed to be reversed manually on a regular basis in order to work properly. Nikola Tesla saw this as an inefficient way to produce electricity. As a result, Tesla used the idea of the rotating magnetic field, which had been developed by François Arago, to invent the induction motor, which reverses automatically. How is this an example of a scientist applying creativity to solve a problem?
A-Tesla investigated a new problem that no one had considered before.
B-Tesla used another scientist’s research as inspiration.
C-Tesla designed a new experimental method for research.
D-Tesla invented an entirely new concept to replace an inefficient design.