question 14\n0.27 points\n\to minimize preexisting differences between a control group and an experimental…

question 14\n0.27 points\n\to minimize preexisting differences between a control group and an experimental group, experimenters should use\\na random assignment.\nb naturalistic observation.\nc case studies.\nd correlation coefficients.

question 14\n0.27 points\n\to minimize preexisting differences between a control group and an experimental group, experimenters should use\\na random assignment.\nb naturalistic observation.\nc case studies.\nd correlation coefficients.

Answer

Brief Explanations:

Random assignment distributes participants randomly between control and experimental groups, reducing pre - existing differences. Naturalistic observation is about watching behavior in natural settings, case studies focus on individual cases, and correlation coefficients measure relationships between variables, none of which address minimizing group differences like random assignment.

Answer:

A. random assignment