The correct answer is D. Placement.
Internal recruitment is the process of filling a vacant position with an employee from within the organization. It is a cost-effective way to recruit new employees, as it does not require the organization to spend money on advertising or recruiting agencies. Additionally, internal recruitment can help to improve employee morale and retention, as employees are more likely to be satisfied with their jobs if they feel that they have opportunities for advancement.
There are a number of ways to recruit employees internally. One way is to promote employees from within the organization. This can be a good way to reward employees for their hard work and dedication, and it can also help to ensure that the organization has a strong pool of qualified candidates for management positions. Another way to recruit employees internally is to transfer employees from one department to another. This can be a good way to fill a vacancy in a department that is short-staffed, and it can also help employees to develop new skills and experience. Finally, organizations can also recruit employees internally by hiring trainees. This can be a good way to bring new talent into the organization, and it can also help to reduce the costs associated with training new employees.
Placement is not an internal source of recruitment because it involves hiring new employees from outside the organization.