Is "the Dark Ages" an appropriate term to describe the Middle Ages? Why or why not?

Which sentence correctly uses a latin root word that means to see

Give an example of a situation in which an individual's pursuit of economic self-interest may not benefit but instead harm the rest of society

Banks offer services such as checking and savings accounts. what do banks do with most of the money they receive in deposits from customers? a) they loan it out to other customers. b) they spend it on new banks in other places. c) they keep it in a locked, secured vault in the bank. d) they send it to the federal reserve in washington, d.c.