What encompasses all activities related to training and educating employees?

Human Resources Development is the correct choice because it specifically focuses on the processes involved in training, educating, and developing employees to enhance their skills and competencies. This includes various activities such as training programs, workshops, professional development opportunities, and coaching.

While Human Resources Management addresses broader topics involving policies, procedures, and employee relations, Human Resources Development zeroes in on the continuous enhancement of employees' abilities and knowledge. Human Resources Planning is more about strategizing workforce needs and aligning them with the organization’s goals, rather than directly providing training. Talent Acquisition pertains to the recruitment and selection of new employees, which is a crucial function but does not encompass the ongoing development and training of existing staff.

Thus, Human Resources Development is essential for ensuring that employees remain skilled, competitive, and prepared for the evolving demands of their roles within the organization.