D. Was
Because if you read it with a,b, or c it wouldn't make sense. Now read it with D and see doesn't it make sense?
I think its C but I could be wrong so verify that answer
Answer:
the topic would be medium of exchange and the main idea is basically the author's message about the topic, it can be expressed directly or implied. So in this case the main idea would be that medium of exchange have changed their ways of trading or bartering for the better making it way easy.
hope i helped, if i didn't i'm sorry and good luck! :)
America suffers from loneliness because of the lack of acceptance, empathy, and the understanding of each other. Most of us are blinded by clouds of emotional and or physical turmoil that accumulate within us; thus, selfishness and the need to be accepted. We all want sympathy, honestly, but who really has the time to decode your fake smile when we're so focused on our own problems. Therefore, a malady will relieve our stresses with ways not anyone could. A true one night stand that will stand within endless deep and philosophical conversations; the malady is merely a delusion of a fantasy one cannot really have in this dimension, in this world alone.
