Which value encourages Marines to act rightly even under pressure?

The value that encourages Marines to act rightly even under pressure is integrity. Integrity embodies the fundamental principles of honesty and moral uprightness, promoting adherence to ethical standards regardless of external circumstances. When faced with challenging situations, maintaining integrity means that a Marine will choose to do what is morally right, even when it might be difficult or when external pressures tempt them to compromise their values. This commitment to ethical behavior builds trust and credibility within the unit and upholds the reputation of the Marine Corps as a whole.

Discipline, while important, pertains more to self-control and adherence to rules and orders, rather than the moral dimension of right action in pressure situations. Courage involves facing fear and adversity, but does not directly reference the moral compass needed to act rightly. Respect is a crucial value for maintaining relationships and teamwork but does not specifically focus on the personal ethical decision-making that integrity embodies. Thus, integrity is the foundational principle that ensures Marines remain true to their values, even when under significant pressure.