The correct answer is: C. Both combined

POSDCORB is an acronym for the seven functions of management: Planning, Organizing, Staffing, Directing, Coordinating, Reporting, and Budgeting. It was coined by Luther Gulick and Lyndall Urwick in their 1937 book "Papers on the Science of Administration".

Gulick was an American public administrator who served as the first head of the United States Bureau of the Budget. Urwick was a British management consultant who is considered one of the founders of modern management theory.

The POSDCORB acronym is a useful tool for understanding the different aspects of management. It can be used to analyze the work of managers in any organization, and it can also be used to develop a personal management style.

Planning is the process of setting goals and objectives, and developing strategies for achieving them. Organizing is the process of creating a structure for the organization, and assigning tasks and responsibilities to employees. Staffing is the process of recruiting, hiring, and training employees. Directing is the process of providing guidance and direction to employees, and motivating them to achieve goals. Coordinating is the process of ensuring that all parts of the organization are working together effectively. Reporting is the process of communicating information to stakeholders, such as employees, customers, and shareholders. Budgeting is the process of developing and managing a financial plan for the organization.

The POSDCORB acronym is a valuable tool for managers, but it is important to remember that it is just a framework. The specific tasks and responsibilities of managers will vary depending on the organization and the industry.