The purpose of an introduction in an essay is to introduce the topic of the entire essay
I think it's D because A is correct B could be right and C is wrong. But the answer D is basically A and B combined. I know i explained that horribly but D should be correct.
The Answer: The best way to understand someone's true abilities is to listen to him or her use language
Answer:
the answer is b: to explain how light travels
Explanation: