sentence three seems to be the right answer
A part of a scentence is best defined by heat the theme is.
Answer: Public parks were forbidden for African Americans to enter, and theaters and restaurants were segregated. Segregated waiting rooms in bus and train stations were required, as well as water fountains, restrooms, building entrances, elevators, cemeteries, even amusement-park cashier windows.
Answer:
It is a funny way of pointing out that Stanley and Elya are clearly not living at the same time.
Explanation:
This is the excerpt from Louis Sachar's novel "Holes". He is famous children and young adults author.
Now, regarding this excerpt, it is quite obvious that Elya is Stanley's great-great-grandfather and, of course, there was no way Elya, at the time, could have known that he's going to have a great-great-grandson, let alone some detailed information.
This makes that line rather unnecessary. But it also can suggest that its only purpose is comedic effect by stating an obvious thing.
