Comprehensive and Detailed In-Depth Explanation:
Job rotation involves periodically moving employees between different tasks, roles, or departments to increase engagement, reduce boredom, and enhance skill development.
Option A (Job specification) - Defines job responsibilities but does not address boredom.
Option B (Job objectives) - Focuses on performance goals rather than task variety.
Option D (Job description) - Simply documents job roles without changing daily tasks.
Thus, job rotation (Option C) is the most effective strategy for overcoming monotony and job-related boredom.
Reference: IIA Human Resource Management - Employee Motivation Techniques

Reference: IIA Business Knowledge for Internal Auditing, Motivation Theories section.