In a data set consisting of gender, salary, and name of employees, the employees are the observational unit and the variables are the gender, salary, and names

It seems that mutator and accessor functions defeat the purpose of making the member variables private. Why is this not so?

What will be an ideal response?

The item marked ____ in the accompanying figure is the playhead.

A. 2 B. 4 C. 5 D. 8