What is the dependent variable of the study?*1 pointa. Pregnant patientsb. Level of anxietyc. Introduction of music therapyd. Pregnancy

Break Down the Problem

1. Understanding Dependent Variable: A dependent variable is the outcome that researchers measure in an experiment. It is affected by changes in the independent variable.
2. Identifying Variables in the Study: In this case, we have four options that may represent different aspects of the study.

Relevant Concepts

1. Independent Variable: This is the variable that is changed or controlled in a scientific experiment to test its effects on the dependent variable. It is assumed to be the cause.
2. Dependent Variable: It is what you measure in the experiment and what is affected during the experiment.

Analysis and Detail

1. Option Analysis:
   • a. Pregnant patients: This describes a group but is not a variable that is measured.
   • b. Level of anxiety: This is typically a measurable outcome, which can change due to different treatments or conditions.
   • c. Introduction of music therapy: This seems to be an intervention or the independent variable.
   • d. Pregnancy: Similar to (a), this is a state or condition, not a measurable outcome.

Verify and Summarize

From the options provided, the variable that represents an outcome which may change due to the introduction of music therapy would be the level of anxiety. Thus, it fits the definition of a dependent variable.

Final Answer

b. Level of anxiety is the dependent variable of the study.