Les just bought a megaphone of root beer. As he drinks from the giant cup, he eventually becomes full. One of his friend's comments, "If you don't stop drinking that stuff, you will get sick." Les replies, "Hey, I bought it, and I am not going to waste one drop of it." Les's behavior best illustrates .

Les's behavior best illustrates the sunk-cost fallacy.

Explanation:

The sunk-cost fallacy refers to the probability of people and companies continuing with their projects because they have already invested a lot of time and money in it. They insist in pursuing an expected result, even when the most efficient decision would be to abandon that project. That is the case with Les. He sees the beer as an investment. He paid for it, and he has spent time drinking it. Even if his friend is right about him getting sick, Les would rather drink the whole beer than to give up on his investment.

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explanation:

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