Explanation

The correct answer is C. nominating committee.

Why this is correct:

1. Primary responsibility of nominating committee: The nominating committee (also known as the governance committee) is specifically responsible for board composition, director nominations, and ensuring alignment with corporate governance principles.

2. Key functions of nominating committee:

   • Identifying and recommending qualified candidates for board membership
   • Assessing board composition and diversity
   • Reviewing director qualifications and independence
   • Ensuring the board has appropriate skills and experience
   • Overseeing board succession planning

3. Other committees' responsibilities:

   • Risk committee: Primarily focuses on enterprise risk management, risk oversight, and risk policies
   • Audit committee: Focuses on financial reporting, internal controls, external audit oversight, and compliance

Detailed Analysis:

In corporate governance structures:

• Nominating/Governance Committee: Responsible for board composition, director recruitment, evaluation, and succession planning. This committee ensures the board has the right mix of skills, experience, and diversity to effectively oversee management and align with governance principles.
• Risk Committee: Oversees the company's risk management framework and policies.
• Audit Committee: Oversees financial reporting, internal controls, and external audit functions.

Therefore, ensuring board composition aligns with governance principles falls squarely within the nominating committee's mandate.