Which of the Following Is the Best Illustration of Metacognition

Which of the following is the best illustration of metacognition?

A) Kirk stays up late studying for a geography test. The next morning in school, he is too tired to think straight during the test.
B) Russ is studying for a history test. He knows that he has trouble with dates, so he checks himself by taking a short quiz after each chapter.
C) Robin is studying for a spelling test. She writes each spelling word five times in her nicest handwriting.
D) Diontre is preparing to take a state achievement test, so he checks out preparation packets from the school library and reads them cover-to-cover.