Employers must guard employees from three types of hazards. these include a floor that is large enough for a person to fall into, a floor hole that is large enough and for small items to fall into, and a wall opening that is large enough for a person to fall through and is at least 4 feet above the ground

The answer is opening, wide. Employers must guard employees from three types of hazards. These include a floor opening that is large enough for a person to fall into, a floor hole that is large enough and wide enough for small items to fall into, and a wall opening that is large enough for a person to fall through and is at least 4 feet above the ground.  

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.   

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