Which area became part of the islamic empire by the eighth century? a: france b: italy c: greece d: spain

Italy, Greece and France have never been under the Islamic Empire (or any Islamic rulers as far as I know).

Spain was under Islamic leaders for a long time and there was a period of re-conquista later, when the land was re-conquered by the Christians. And in 8th centrury Spain was in fact part of the Islamic Empire. 

Sorry to say i don't have the answer