Answer: A.
The first paragraph explains how the system functions, and the second paragraph describes how the system has succeeded.
Explanation: A because just took the question.
The sentence which uses quotation marks correctly is: "How are your classes?" asked Xavier. When using quotation marks with a question sentence, always include the question mark inside the quotation marks and a comma after the quoted sentence is no longer necessary.
The second answer"many people disagree with this position, for good reason,perhaps."
