I believe the answer is D
Italy was not actually a unified country during that time period, it was instead comprised of many city-states (Milan, Venice etc.). Therefore Italy as a whole would not have been able to fund any of the explorers because they were not united as Italy. As well, because Italy was not unified, it was not as powerful as countries like Spain, France and England.
This is false. The country where it was strongest was France. French aristocracy was so powerful and wealthy that it caused the French revolution in the 18th century, which marked the fall of Feudalism.
D. Be patient and learn all you can about the job