Why do you suppose King Ferdinand and Queen Isabella might not have believed Columbus would actually have a successful journey?

Explanation:

King Ferdinand and Queen Isabella of Spain agreed to fund his voyage because they believed that if a whole new sea route was to be discovered that landed in the Indies it would help Spain have the upper hand in the competition against Portugal.

There wasn't any known man who sailed that route and came back alive with information regarding india or any sort of extravigantly large landmass so they had reason to believe that he would not be any more successful.

Explanation:

answer; fair labor and standard act;

it would be d). more resources must be obtained to attain that combination of goods and services