Which of the following elements would help you decide when a cause-and-effect conclusion about the relationship between two variables in an experiment has been reached? (1 point)

Question

OURSE TOOLS

an international study

a small sample size

low-cost study design

random selection of participants

Answer 1

To decide when a cause-and-effect conclusion about the relationship between two variables in an experiment has been reached, the key element would be random selection of participants. This practice helps ensure that the sample is representative of the larger population and minimizes bias, which is crucial for establishing a causal link between the variables under study.