Which component of OJT is acquired to build confidence and competence during upgrade training?

The correct choice focuses on job experience, which plays a crucial role in building both confidence and competence during upgrade training in on-the-job training (OJT). Job experience encompasses the practical, hands-on work that individuals engage in while learning their role, allowing them to directly apply theories and principles in real-world scenarios. This experiential learning is vital, as it not only enhances technical skills but also helps trainees become more comfortable and self-assured in their abilities through repeated practice and exposure to various tasks associated with their job.

Furthermore, job experience enables trainees to face challenges they might encounter in their roles, encouraging problem-solving and adaptability, which are essential traits in any career. This ongoing engagement fosters a deeper understanding of their responsibilities and contributes to overall professional growth.

In contrast, job rotation, skill assessment, and duty execution, while important components of OJT, do not specifically highlight the accumulation of experiences that directly lead to increased confidence in a practical setting. Job rotation involves changing positions to gain a broader understanding of different roles, skill assessment is about evaluating capabilities rather than building them, and duty execution refers to the performance of tasks without the fundamental growth through varied experiences that job experience provides.