Final answer:
The sentence should be completed with 'removed,' to ensure that emblems and letters representing membership are not displayed by non-members, thus maintaining the group's exclusivity and preventing misrepresentation.
Step-by-step explanation:
The sentence should be completed with 'removed' indicating that emblems and letters which signify membership to a particular group should not be displayed if the jacket is worn by someone who is not a member of that group. This maintains the integrity and exclusivity of the emblems and letters as symbols of membership. When a jacket is adorned with specific emblems and letters that represent an organization or group, it often signifies that the wearer is a member or has earned the right to display such symbols. If the jacket is to be given to a non-member, those emblems and letters should ideally be removed to avoid misrepresentation.
It is common practice in various organizations, such as sports teams, academic societies, or clubs, to have certain insignia on clothing that represents affiliation. The act of removing the emblematic elements when transferring ownership to a non-member respects the value and significance those symbols hold within the organization. It also ensures that only members who have the proper affiliation or who have met certain criteria can publicly display the group's symbols.