Final answer:
The Marine Corps allows for one Navy and Marine Corps Commendation Medal per every 50 Marines and Sailors on their T/O per calendar year to maintain the award's prestige.
Step-by-step explanation:
The Marine Corps limits the awarding authority for the Navy and Marine Corps Commendation Medal to one medal for every 50 Marines and Sailors on their Table of Organization (T/O) per calendar year. This is set to maintain the prestige of the award and allows for recognition of outstanding service and accomplishments that are still somewhat exclusive within the organization.