<h2>Answer:</h2>
Allocation of sources.
<h3>Explanation:</h3>
Economics has not played its role only in the market but it has a very important role in an individual's life.
When economies think of investing and try to bring something in a market, they think on different issues of allocation of sources. Sources allocation is an important factor in an economies life. If everything is not planned or not allocated well, it can cause a severe loss in business or market.
Similarly, an individual needs to allocate the sources in a well-mannered way to achieve the goals. If the things are not managed well, the result could be reversed or maybe the worse in shape of unbearable loss.
The correct answer is A) Zimbardo did not use a control group.
The major flaw in the research design of the Stanford prison experiment was that Zimbardo did not use a control group.
A control group was necessary to study a particular variable in prison. He had no alternative group to compare and measure the results of the experiment.
Other mistakes he had were that he was part of the experiment. He participated as the prison superintendent. He was an authoritative figure inside the experiment of the prison and influenced the behavior of his students. He should have a neutral position.
The president of the United States
