Achievement of objectives of an organization is concerned with

The correct answer is C. management.

Management is the process of planning, organizing, leading, and controlling an organization's resources to achieve its goals. It is concerned with the effective and efficient use of resources to achieve the desired results.

Organization is the process of dividing work into tasks and assigning them to individuals or groups. It is concerned with the structure of an organization and how the different parts work together.

Division of work is the process of breaking down a task into smaller, more manageable tasks. It is concerned with the specialization of labor and how tasks are assigned to individuals or groups.

Planning is the process of setting goals and developing strategies to achieve them. It is concerned with the future of an organization and how it will achieve its goals.

The achievement of objectives of an organization is concerned with management because management is responsible for planning, organizing, leading, and controlling the organization's resources to achieve its goals.