Which of the following statements is correct? economists almost always find it easy to conduct experiments in order to test their theories. economics is not a true science because economists are not usually allowed to conduct experiments to test their theories. economics is a social science rather than a true science because it cannot employ the scientific method. economists are usually not able to conduct experiments, so they must rely on natural experiments offered by history.

it is d i just took the test

1) the stages a new product goes through from beginning to end, i.e., the stages that a product passes through from introduction through growth, maturity, and decline. 2) the time from initial research and development to the time at which sales and support of the product to customers are withdrawn. 3) the period of time during which a product can be produced and marketed profitably.

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answerthe above statement is (true);