Sandy and Carla, age 24 and 27, are planning on buying a boat on credit for use during summers. Carla will be the main signer for the loan, with Sandy being the co-signer.
Should they use credit? If so why?

the conditions that made the byzantine empire vulnerable to attacks by the muslin turks were the sack of constantinople by western crusaders, the conquests of the sultanate of rum, presence of rival kingdoms and finally the set up of fiefdoms at the empire which were owned by the ghazis (turkish warriors).

i believe it is the second one.   if correct plz mark brainliest.

the answer would more than likely a.)falling crop prices  

hope the answer is right and ,either way have a nice day.