Aclient with alzheimer's disease is confused and mumbling incoherently and rambling. to redirect the client's attention, the nurse should encourage the client to

The nurse has to do several things. 
1. stay calm
2. respond with brief explanation to the client's questions
3. show photos and other important reminders
4. suggest rather than correct. 

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.