What economic lesson did the united states learn from the vietnam war during the 1970s? a)the economy cannot fund both a large war and major social programs b) unemployments will always lead to a recession c) a massive war effort is too expensive for the country to undertake d)it is necessary to raise taxes to support a major war.

One economic lesson that the united states learned from the Vietnam war during the 1970s was that "a)the economy cannot fund both a large war and major social programs," since during this time the US budget was under major strain. 

The anwser is basically A

Explanation:

individual preferences.

Explanation:

Individual preference refers to the systemization of choices based on their comparative utility, which leads to a decision.

According to economics and social science, individual preferences are defined mostly by taste determinants, although we are expected to act in our best rational interest, considering prices, income, and availability.