Introduction:
When preparing for the UPSC exam, it is crucial to choose the right optional subject that aligns with your strengths and interests. Organizational Behavior and Human Resource Management are two popular options among candidates. In order to make an informed decision, it is important to understand the scope and relevance of each subject in the UPSC exam.

Scope and Relevance:
1. Organizational Behavior:
- Organizational Behavior (OB) is the study of human behavior within organizations, focusing on individual, group, and organizational dynamics.
- It covers topics like motivation, leadership, communication, decision-making, and organizational culture.
- OB helps in understanding how employees and organizations interact, and how their behavior affects performance.
- It provides insights into managing and leading people effectively, which is crucial for administrative roles in the civil services.

2. Human Resource Management:
- Human Resource Management (HRM) is concerned with the management of people within organizations.
- It includes activities like recruitment, training and development, performance appraisal, compensation, and employee relations.
- HRM focuses on ensuring the right people are hired, trained, and motivated to achieve organizational goals.
- It is essential for effective personnel management in government organizations, making it relevant for UPSC aspirants.

Which one to focus on?
1. Consider your strengths and interests:
- Assess your strengths and interests in relation to the two subjects. If you have a natural inclination towards understanding human behavior and interpersonal dynamics, Organizational Behavior may be a better choice. If you are more interested in managing and developing people within organizations, Human Resource Management might be a better fit.

2. Relevance to the UPSC syllabus:
- Analyze the UPSC syllabus for the subject you are considering. Look for topics that align with your strengths and interests.
- Check the previous years' question papers to understand the weightage given to each subject. This can give you an idea of the importance of each subject in the exam.

3. Availability of study material and resources:
- Look for availability of quality study material and resources for the subject you choose.
- Check if there are reliable sources, such as books, online platforms, or coaching institutes, that provide comprehensive coverage of the subject.

Conclusion:
Both Organizational Behavior and Human Resource Management have their own significance and relevance in the UPSC exam. Choosing between the two depends on your strengths, interests, and the availability of study material. It is important to make a decision that aligns with your aptitude and will help you perform well in the exam.