A is wrong. The semicolon isn't in the right place. B is wrong because it also has a misplacement of a comma and a semicolon. C is wrong becuase a comma should be used in place of the semicolon. This means that D is right; it combines two statements with a semicolon and the two statements could be made into their own sentences.
This is when critics want to find meaning in what an author has written. Analysis is much broader while scanning is incorrect. Evaluation is also inappropriately used here.
