I wanna say the answer is d
In the 1860s, most factories were located in the North of the United States, mostly because the South was largely agricultural and remained this way for many years.
Abraham Lincoln is the right answer
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.
