The answer would be youthful, because the WW1 had just happened so people adresses life with a very relaxed attitude because so many people had died they realised how short life is and became more promiscuous in their day to day activities
The change in the frequency of an existing gene allele
Ok, so obviously, you can tell that A. is not even an answer since his name is Prince Henry which is an English name and the Islamic empire never really reached what is now present-day U.K...B. and D. are wrong because Catholicism was in Spain and the Pope was also in Spain. So your only correct answer is C.