What Is the Key Purpose of Operationally Defining a Variable

Multiple Choice

What is the key purpose of operationally defining a variable?

A) A variable must be defined before one can determine if it is an independent variable or a dependent variable.
B) A variable cannot provide correlational information until it is operationally defined.
C) A variable must be defined in terms of unique measurement procedures that lend themselves to only one statistical test.
D) A variable must be defined in terms of precise measurement procedures that other researchers can use if they wish to repeat the study.