People in the Port City of Jeddah Were Less Culturally

People in the port city of Jeddah were less culturally conservative than people in the interior of the country.The most likely reason for this is that ________.

A) people in the port cities have more contact with foreigners
B) the coastal area has to trade with countries using different religious holidays
C) the coastal area has a culture with a higher uncertainty avoidance
D) the coastal area is secular, whereas the interior of Saudi Arabia has a state religion