Which of the following is a step you should take to properly lockout and hangout electrical equipment and machinery

Enable backup energy sources, such as generators and batteries

You did not show us the image of the burger, but i shall try to answer as best i can.  when purchasing food, always consider the ingredients as well as the person who prepared it. consider if they were hygienic people or not, in case the burger was infected with bacteria. no mortal should place an infected burger into their mouth.