What exactly is the question
I think this might be the answer not sure
I don't see any options but I do have something that might help. Try looking up the definition and meaning of the religion of Islam. If you know what some of the words mean, that will single them out. Use process of elimination.
The first main reason was most of the market was based solely on credit, which was stock that was purchased without actual cash, but purchased on credit.
The second factor was the massive pull out by many investors due to a panic that caused the Banks to attempt to purchase these stocks leading to a complete collapse in the market.