<span>Any value given up by not choosing to spend or save the money is the _____ .
Opportunity Cost</span>
Answer:
C: Irrigation systems
Explanation:
A can help farm, but it doesn't give the ability to since water would be needed in the desert.
B is more for hunting and fighting, not farming.
C gives water which makes them able to farm in the desert.
D doesn't change much, as in, they'd still need water.
A should be the correct answer if i remember correctly.
