Which of the following is NOT a main source of authority in mission planning and execution?

The correct answer is that legitimacy in the financial backing of the mission is not considered a main source of authority in mission planning and execution. The primary sources of authority in this context focus on the legitimacy of the mission itself, the results achieved, and the means used to carry out the mission.

Legitimacy in the mission itself refers to the justification and rationale behind undertaking a particular mission, which is crucial for gaining support and acceptance from stakeholders and the public. Legitimacy in the results emphasizes the importance of outcomes that align with the mission's goals and objectives, as successful results can reinforce the credibility and authority of the participants involved. Legitimacy in the means of conducting the mission concerns the methods and practices utilized in execution, ensuring they are principled and aligned with legal and ethical standards.

In contrast, while financial backing is important for enabling a mission, it does not inherently provide legitimacy or authority regarding the mission's purpose or execution. The presence of adequate funding does not guarantee that a mission is justified or accepted, making it less relevant as a source of authority in this specific context.