what is a confounding variable?\na. a confoun...
what is a confounding variable?\na. a confounding variable is a response variable that was not considered in a study whose effect cannot be distinguished from a second explanatory variable in the study.\nb. a confounding variable is a response variable that has an effect on the explanatory variable, but it cannot be accurately measured in the study.\nc. a confounding variable is the explanatory variable on which a study has been focused.\nd. a confounding variable is an explanatory variable that was considered in a study whose effect cannot be distinguished from a second explanatory variable in the study.
Answer
# Brief Explanations:
A confounding variable is an explanatory variable. Its effect on the response variable can't be separated from another explanatory variable's effect in a study. It's not a response variable (ruling out A and B), and it's not the main - focused explanatory variable (ruling out C).
# Answer:
D. A confounding variable is an explanatory variable that was considered in a study whose effect cannot be distinguished from a second explanatory variable in the study.