The answer is D.color contrasts with the text you are reading
Answer: D is the answer.
Explanation: Cause and Effects Citations are when one is to look for a solution to a problem, most often, and D (last option) is the only option that does so and spells it out.
Answer:
"Tesla not only did the job overnight, but he also told Edison that he could redesign the generators so that they would work better and save money."
Explanation:
Because the passage best describe the main character Tesla and the ending of the sentence