Which of the following is NOT a reason for MARK to be included in the method of engagement?

The correct answer emphasizes that option C is not a reason for including MARK in the method of engagement because it pertains specifically to the height at which illumination munitions should detonate, rather than the purpose of marking targets or orienting forces. MARK is primarily used to direct attention and indicate the location of targets to ground troops, aircraft, or other observers, as is clarified in the first two options.

While illuminating munitions can provide valuable support on the battlefield, the specifics of height of burst do not fall under the direct functions that MARK serves during engagement methods. Options A and B directly address the essential roles of MARK—orienting personnel and signaling targets—making them integral to effective coordination and engagement on the battlefield. Therefore, recognizing that marking the optimal height of burst is outside the direct engagement utility of MARK reinforces why option C is the correct answer.