The correct answer is an experiment.
An experiment refers to an investigative study, where a researcher scientifically tests a hypothesis. Specifically, a researcher tests the effect an independent variable (manipulated variable) on the dependent variable (outcome), to investigate whether there is a causal (cause and effect) relationship between the variables. For instance, if a researcher wants t<span>o determine a cause and effect relationship between alcohol consumption and driving ability, he or she would use an experimental research study to do so. </span>
Answer:
e.All of these are true.
Explanation:
Bechel is an engineering company that operates in the field of construction and civil and architectural project management. It is the largest US construction contractor and is the 11th most successful privately owned American company. About Bechel, we can say that its competitive advantage is project management, it was the Hoover Dam construction contractor while helping to rebuild Iraq. Bechtel teams have had to travel under armed escort. Bechtel's procurement program is global in nature.
2 and 3 represents main ideas from the article
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