What event most directly contributed to the end of us involvement in vietnam? was it the raid of my lai village?

The event that most directly contributed to the end of American involvement in Vietnam was the Tet Offensive, as it changed the vision of the American society regarding the war, as it began to ask for the end of the conflict.

For the American people, the Tet Offensive was a complete defeat. Not only the optimistic assertions of their military had been totally wrong, but the communists could enter anywhere in South Vietnam. It had completely broken the feeling of advancing in the race, and allied territory had been violated. All the effort of almost three years of campaign proved useless. For many more than those who thought about it at the beginning of the war, Vietnam was nothing more than a slaughterhouse.

Thus began the protests against the war, which would end up influencing the government to withdraw the troops.

the correct answer is “opportunity cost”. opportunity cost is what a company misses out because it decided in one option over another one. in this case, the company decided to invest in building a factory so it gave up another possible benefit or profit in order to achieve success with the factory.  

trade-off is not the correct answer since it is a situation in which you accept losing something in return for benefits in other areas.

and finally, consequence is a general term used to accept what it comes when you make a decision. it can be a positive or negative consequence depending if the decision you took was the correct one.