Final answer:
No military personnel are categorically ineligible for Joint or Department of Defense awards based on being enlisted or officers; eligibility depends on meeting criteria for the awards.
Step-by-step explanation:
The question asks which military personnel are ineligible to receive Joint or Department of Defense (DOD) awards. According to U.S. Department of Defense regulations, no distinction is made between enlisted personnel and officers when determining eligibility for such awards. Both can receive them as long as they meet the criteria. However, there are specific requirements and circumstances that could make certain individuals ineligible, such as not meeting the criteria established for a given award, or issues related to misconduct. But this is not dependent on whether they are enlisted personnel or officers. Therefore, no personnel are categorically ineligible based solely on their status as enlisted or officers, or by virtue of serving in combat zones.
The correct answer is c) Both enlisted and officers, meaning that the nature of the question involves eligibility criteria for awards without discrimination between ranks and roles.