3. We can see that PQR3 actually stands for: C. Preview, Question, Read, Recite, and Review.
4. Note cards are very good for learning: All of the above.
<h3>What is PQR3?</h3>
PQR3 is actually known to be an abbreviation for Preview, Question, Read, Recite and Review. This is a method that helps students to read and study their books. Use of note cards also helps students to prepare for exams.
Thus, we see that the above answers given are correct.
Learn more about note cards on brainly.com/question/2547965
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