C)The rediscovery of Greco-roman culture. ;
The motivation for european exploration in the 15th and 16th centuries was definitely A and D. It is also true that Ottoman empire did take control of the Silk road in 1453. that leaves the B as your answer for a non-motivator for european exploration. It makes sense really. Greek and Roman are both found in Europe!
The motivations for European exploration included the desire for wealth, Ottoman control of trade routes, and a spirit of curiosity. However, the rediscovery of Greco-Roman culture was not a direct motivation for exploration during the fifteenth and sixteenth centuries. Therefore, the answer is C.
;