The correct answer is A) Stalin had little regard for individual rights.
Based on the quote from historian Lewis Gaddis, it can be determined that he believed that Stalin had little regard for individual rights.
The quote says: "World politics was an extension of Soviet Politics, which was, in turn, an extension of Stalin's preferred personal environment: a zero-sum game, in which achieving security for one meant depriving everyone else of it."
In the quote, Gaddis expresses the power Joseph Stalin had as a dictator of Russia and how he did not consider the rights of civilians.