Helena proposes that the more impulsive a student is, the more likely he or she will be to change answers on a multiple-choice test. The variable (s) in this statement is/are:

changing multiple choice answers and impulsivity

Explanation:

Variable: In a psychological or scientific research process, the term variable is defined as the things that can be varied or changed, for example, value or characteristics.

Variables are responsible for determining whether any change in one thing can lead to make changes in the other thing. Therefore, it plays a major role in psychological research.

Types: Independent variable, Dependent variable, and control variable.

In the question above, the variables in the given statement are changing multiple choice answers and impulsivity