On-the-job training methods include:

On-the-job training (OJT) refers to methods where employees learn new skills and knowledge while actively performing their work tasks in the actual work environment. This hands-on approach allows for immediate application and feedback.

• Job rotation is the correct answer because it is a classic OJT method where employees move between different jobs or departments to gain varied skills and experiences directly related to their work environment.
• Classroom lectures (A) are typically off-the-job training methods, conducted in a formal setting away from the immediate work environment.
• Case studies (C) are also off-the-job, involving the analysis of real or hypothetical situations, usually in a classroom or workshop setting.
• Simulations (D) are off-the-job training methods that create a realistic work environment for training without the risks of actual work.