Which of the following is not a type of nonprobability sampling procedure?

Confounding due to maturation is controlled by

A) limiting participants to a one sex only. B) preventing attrition during the study. C) employing a posttest. D) having the experimental and control groups equivalent at the beginning of the study.

What has led to the Bill of Rights' current prominence?

a. The due process and equal protection clauses of the Fourteenth Amendment b. The Supreme Court's decisions to strike down certain state laws c. Advances in technology challenging the Ninth Amendment d. Both the due process and equal protection clauses of the Fourteenth Amendment and the Supreme Court's decisions to strike down certain state laws