I think its C. they recognized Abu Bakr as the rightful caliph of islam.
I am pretty sure that three options from the list represented above are suitable for your question. Just checked the list of activies and come across these ones : discus throw, wrestling and boxing. Therefore A,B,C are the correct ones.
2008 would be a great example. Look up when the stock market crashes.
Answer:
It ensures that criminals will be strictly punished for violating the law.
It means rubber people. it was a name of a mesto-american tribe (:
