Click on an open question and once you are brought to the next page, click the "Answer this Question" button. Enter your answer and source(s) in the space provided and then click on the "Preview" button. When you are transported to the preview page, click the "Submit" button to send your answer.
Hope this helps. Send me a message if you have any more questions.
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This content was originally posted on Y! Answers, a Q&A website that shut down in 2021.