Explanation:

- Rigid: Principles that do not change regardless of circumstances. They are often seen as inflexible and unyielding.

- Contingent: These principles depend on the specific situation. They change based on different variables and environments.

- Flexible: This means the principles can adapt to different situations as required. They are not set in stone and allow managers to adjust as needed.

- Universally applicable: These principles apply everywhere and in all circumstances, regardless of location or context.

Correct Answer: Flexible