Answer:
They reinforced egalitarian social structures
Explanation:
Focusing on yourself would be more important than trying to change other people, as long as you’re changing for the better then you could be part of changing the world...
Here we have two different decisions.<em><u> Opportunity cost</u></em> of buying the CD and not buying the DVD is 1: ($11-$10). And <em><u>opportunity cost</u></em> of buying the CD and not buying the new T-shirt is 4: ($14-10). <em><u>Opportunity cost</u></em> is the difference between the value of the option chosen and the value of the best option not made. If the option I choose gives me a benefit of 10 but there is an alternative option offered by 12, the opportunity cost is 2.