Any practices should best be based on a research - this is the correct answer. (a. child development and research) Research is the best source of actual knowledge, rather than people's best guesses (people's best guesses might lead government regulations, but it would be better if they also followed research results.).
Statistical significance shows that an effect exists in a study, practical significance shows that the effect is large enough to be meaningful in the real world.
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It's a fundamental economic principle that when supply exceeds demand for a good or service, prices fall. When demand exceeds supply, prices tend to rise. ... However, when demand increases and supply remains the same, the higher demand leads to a higher equilibrium price and vice and versa .Demand is the quantity of consumers who are willing and able to buy products at various prices during a given period of time. Demand for any commodity implies the consumers' desire to acquire the good, the willingness and ability to pay for it.
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Veto overrides occur when a legislature votes to reverse a veto issued by an executive such as a governor or the president. A veto is an act of disapproval by an executive that prohibits a bill passed by a legislature from becoming law.
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