Why Would a Nurse Researcher Opt to Use Factor Analysis

Why would a nurse researcher opt to use factor analysis?

A) It is used to control statistically for a variable and measures differences among group means.
B) It is used to take a large number of variables and group them into a smaller number of factors.
C) It is used to test the relationship between two variables measured at interval or ratio level data.
D) It is used to measure the relationship between one outcome or dependent variable and several dependent variables.

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