Sabrina went to the store for furniture polish, carrots, pencils, ham, sponges, celery, notebook paper and salami. She remembered to buy all these items by reminding herself that she needed food products that included meats and vegetables and that she needed nonfood products that included school supplies and cleaning aids. Sabrina made effective use of
•the spacing effect.
•the peg-word system.
ANSWER: hierarchical organization