The “helping words” are missing so I believe this line is a Metaphor.
https://www.google.com/url?sa=t&source=web&rct=j&url=https://www.vocabulary.com/lists/52473&ved=2ahUKEwjp5_DD0qTfAhVRExoKHWleBVMQFjAAegQIBhAB&usg=AOvVaw2tFJatLPiI4Z3TggCQ_jK5
Check it out
Answer:
if the resturants are fast food, then they are more than likely not truly good food to be eating all the time.
Explanation: for example McDonald's fake meat chicken nuggets
I would say all the above
