The correct answer is A. professional.
A professional income is a regular income that is earned from a professional job. Professional jobs typically require a high level of education and training, and they often offer good salaries and benefits. Management graduates are typically qualified to work in a variety of professional jobs, such as management consultant, financial analyst, or marketing manager. These jobs typically offer high salaries and good benefits, and they can provide a prosperous life for the management graduate.
The other options are not as relevant to the question. A regular income is an income that is received on a regular basis, but it does not necessarily need to be a professional income. A meaningful income is an income that provides a person with a sense of purpose and satisfaction, but it does not necessarily need to be a professional income. A dependable income is an income that can be relied upon to be paid on time, but it does not necessarily need to be a professional income.