Final answer:
The records of a member who is in a desertion status should be retained by the parent unit for 90 days. This period is maintained to allow for processing actions and record-keeping.
Step-by-step explanation:
The question pertains to the duration for which a member's records, who is in a desertion status, should be retained by the parent unit. According to most military regulations, the records should be kept for a specific period, ensuring that important documentation is available should the member return or be apprehended.
The correct answer to the question is B) 90 days. Records of a member who is in a desertion status are to be retained on board the parent unit for a period of 90 days. This period allows for the appropriate processing of any further actions that may need to be taken and the maintenance of an official record of the individual's status.