Final answer:
Roberta is fulfilling the managerial role of a leader when she trains new employees, as she is guiding and influencing her team towards the organization's goals.
Step-by-step explanation:
Roberta is playing the role of a leader by training her new employees for the quality control lab. This managerial role involves guiding and influencing the team to reach the organization's goals. In her role, Roberta will be teaching, coaching, and providing direction to the new hires. Leading involves setting the tone for the work culture and performance expectations. By training the new employees, Roberta is demonstrating her leadership skills and helping them become proficient in their roles. She will oversee their progress and provide support and guidance as needed, ensuring that they meet the standards and requirements of the quality control lab.
This key management role is distinct from other roles such as being an entrepreneur, who would focus on innovation and new ventures; a planner, who would be strategically thinking about the future needs of the business; a developer, who builds and shapes the team's skills systematically over time; and a monitor, who assesses and supervises the ongoing activities.