Answer:
Bar chart; because job classification is categorical.
Explanation:
Categorical data: Data that can be divided into groups (categories).
Numerical data: Data that is in the form of numbers (also called "quantitative data").
Therefore, "job classification" is categorical data since the classifications such as employee, manager, senior manager, etc. are categories rather than numbers.
Box plots are used to show distributions of numerical data values.
Bar charts are used to show a comparison of values across different categories of data.
Therefore, a bar chart should be used to represent the data as the data is categorical.