Please choose the correct ending to complete the given sentence: Education and Communications: [header] How to study using index cards [title] Keep the text brief. [step] Stick with short phrases instead of full sentences. Use abbreviations for words when possible.

Ending1: For example, don't use endcaps. [title] Pay attention to usage of endnotes. Ending2: Use a word-for-word vocabulary that is not overly complex. Always use capital letters instead of abbreviations. Ending3: You will want to review the cards quickly and condensing the text makes sure that only the most important ideas make it onto the card. The very process of choosing the card's text will kick-start the learning process. Ending4: Use more than one word or phrase when possible. This will help to create a cohesive focus.

Answer format: ending1/ending2/ending3/ending4