The correct answer is D. Staffing.

Staffing is the process of attracting, acquiring, retaining, and developing human resources. It is a critical function for any organization, as it ensures that the organization has the right people with the right skills in the right positions.

Recruitment is the process of finding and attracting potential employees. This can be done through a variety of methods, such as advertising, job fairs, and employee referrals.

Selection is the process of choosing the best candidates from a pool of applicants. This is done through a variety of methods, such as interviews, tests, and reference checks.

Retention is the process of keeping employees happy and productive. This can be done through a variety of methods, such as providing competitive salaries and benefits, offering opportunities for development, and creating a positive work environment.

Development is the process of helping employees to improve their skills and knowledge. This can be done through a variety of methods, such as training programs, on-the-job training, and mentoring.

All of these functions are important for effective staffing. By attracting, acquiring, retaining, and developing the right people, organizations can achieve their goals and objectives.

Here is a brief explanation of each option:

  • Recruitment: The process of finding and attracting potential employees. This can be done through a variety of methods, such as advertising, job fairs, and employee referrals.
  • Selection: The process of choosing the best candidates from a pool of applicants. This is done through a variety of methods, such as interviews, tests, and reference checks.
  • Retention: The process of keeping employees happy and productive. This can be done through a variety of methods, such as providing competitive salaries and benefits, offering opportunities for development, and creating a positive work environment.
  • Development: The process of helping employees to improve their skills and knowledge. This can be done through a variety of methods, such as training programs, on-the-job training, and mentoring.