Final answer:
The primary tool for planning, managing, and tracking your own self-developmental process is an Individual Development Plan (IDP).
Step-by-step explanation:
The primary tool for planning, managing, and tracking your own self-developmental process is C) Individual Development Plan (IDP). An IDP is a personalized document that outlines an individual's goals, strengths, areas for improvement, and action steps to achieve those goals. It helps individuals reflect on their career aspirations, identify their skill gaps, and create a roadmap for their professional growth.
Unlike a vision board which is a visual representation of one's goals and aspirations, a resume which is a document that highlights one's education, experience, and skills, and a to-do list which is a list of tasks to be done, an IDP provides a comprehensive framework for self-development, setting goals, and tracking progress.