The answer would be a because many of the gold diggers actually didn't find gold. hope this helped :3
Synonyms: consequently, so, as a result, hence, thus, accordingly, for that reason, ergo, that being the case, on that account;
The theme is the message that an author is trying to get his or her readers to understand. For example, in the Greek myth of Daedalus and Icarus, the theme was "don't be prideful". Because Icarus and Daedalus violated this by trying to act like the gods, they were punished: Icarus fell into the ocean and drowned.
Answer:
For Dickens, a good education could be the bulwark against ignorance, cyclical poverty and crime. Conversely, a badly run school could be the breeding ground for young, cunning criminals or, on the other hand, produce unimaginative, machine-like pupils ready for the industrial factory.