Downsizing, training, and retraining are part of a human resource plan.

The statement indicating that downsizing, training, and retraining are part of a human resource plan is true. These elements are integral components of effective human resource management practices.

Downsizing refers to the strategic reduction of a company's workforce to improve efficiency or cut costs. It involves careful planning to ensure that it aligns with the company’s overall goals and needs.

Training is critical for enhancing employees' skills and competencies, ensuring that they can meet the demands of their roles effectively. This process not only boosts employee performance but also contributes to overall organizational growth and adaptability.

Retraining is necessary in situations where technology or business needs change, and existing employees need to update their skills to remain relevant and productive.

Recognizing that these elements are fundamental to human resource strategy underscores the importance of having a comprehensive HR plan that not only addresses workforce planning and recruitment but also focuses on employee development and organizational restructuring when necessary. An effective human resource plan should encompass all these aspects to create a skilled, capable, and efficient workforce.