Spain wished to compete with Portugal for trade.
It's true.
Also it means
1. desegregated, especially racially
2. with various parts or aspects linked or coordinated
3. indicating the mean value or total sum of a variable quantity of property
Catherine and he had become lovers; no one told Catherine's husband, the Grand Duke Peter. Catherine saw Orlov as very useful, and he became instrumental in the 28 June 1762 coup d'état against her husband, but she preferred to remain the Dowager Empress of Russia, rather than marrying anyone.
The correct answer in my opinion would be that D is the most important factor here. But this question is quite tricky.
We can surely say for example that literature, organized schools and a hierarchy of priests are not something that constitute a civilization. Organized schools appeared to late, not every civilization had literature and having only a hierachy of priests is not enough to say you have a civilizaton.
Labor has been divided in pre-civilization hunter-gatherer societies as well.
For that reason I'd say the correct answer is D - more food than is needed for survival. Having this, the people in a certain group can focus on other things.