What kind of personnel actions does attrition encompass?

Attrition primarily pertains to the reduction of personnel through various means, which includes both separations from service and transfers within divisions. When considering the options, separations from service are a key component, as attrition specifically accounts for individuals who leave the organization altogether, whether through resignation, retirement, or other forms of departure.

Additionally, transfers within divisions can also play a role in attrition, especially when personnel are moved around which can lead to a net change in the overall staffing levels in specific areas. The understanding of attrition captures not only those who exit the organization but also the fluid movements of personnel that can affect staffing dynamics.

Ultimately, option D encapsulates the full spectrum of personnel actions related to attrition by acknowledging both separations and transfers, while the other options do not capture the full meaning and implications of attrition in a personnel context.