Read the text and then answer the question below.

informational text concussion survivor's journey
Text adapted from the Centers for Disease Control and Prevention website, in the public domain. Reference to specific commercial products, manufacturers, companies, or trademarks does not constitute its endorsement or recommendation by the U.S. Government, Department of Health and Human Services, or Centers for Disease Control and Prevention. Test questions and design under copyright Loving Language Arts. Do not copy/post.


The text was written by Zack's father. What is his main argument in the text?