When resources are scarce, power differences across subunits are ; when resources are plentiful, subunit power differences are
a. magnified, reducedb. reduced, magnifiedc. reduced, not affectedd. magnified, not affected

The correct answer is letter "A": magnified, reduced.

Explanation:

Scarcity does not only represent individuals having to sacrifice some of their needs to fulfill others because resources are limited. Scarcity can also represent the reason for dispute between social levels. When resources are scarce and one social stratum has more access to it, differences will increase. The opposite happens when the resources are allocated properly between them: differences are likely to be reduced.