Answer: A. He made electricity less expensive and more readily available.
Explanation: All of the other choices seem way out of line. We all know that Thomas Edison invented the light bulb, relating to electricity. Japan didn't have much to do with the Industrial Revolution. Eli Whitney was the inventor of the Cotton Gin (a machine for separating cotton fibers from seeds). And I'm pretty sure Samuel Slater was the one who brought designs for a textile mill from Great Britain to the United States. The only rational answer would be A.
