The humble hamburger is easy to take for granted today, but it's a multi-billion-
dollar business. Its American origins aren't universally agreed upon, but most accounts
point to individual flashes of inspiration. Most of these stories include a reference to the
rapidly changing society of the early twentieth century. With less time to prepare and
consume meals, people were looking for something quick and tasty. The enduring lesson
may be to think of your own food-related problem. The solution you devise might make
you a fortune.
What purpose do the final two sentences of the passage serve?
They show that there are no longer food-related problems that need to be solved.
They suggest the hamburger is on the decline and something else will take its place.
They tie the information provided earlier in the passage into the lives of the readers.