The proactive measures teachers can take are all of the listed options together :

  • Review students’ health care or seizure action plans so they’re prepared for an emergency.
  • Document seizure activity carefully.
  • Inform substitutes and any other staff who work with the student about what to do if a seizure occurs.

So, if the original question is multiple choice with “all of these” as one option, the correct answer is: all of these.