The elimination tool enables you to remove answers that you think are incorrect, before you submit your answer. 

Here's how to remove answer choices: 

  1. Click on the "Elimination Tool" toggle. 
  2. Click the x next to the answers that you think are incorrect, to eliminate those answers. 
  3. Click "Hide eliminated answers" 

You can then select and submit an answer from the narrowed-down list. 

Here's a quick example: 

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