Final answer:
Counseling sheets can be entered into a service member's official record only during disciplinary actions, as they are primarily used for professional development and are not automatically part of the official record.
Step-by-step explanation:
The question relates to the rules governing when counseling sheets are allowed to be entered into the official record of a service member. According to military regulations, counseling sheets can be entered into a service member's official record under certain circumstances. The correct answer is 'C) Only during disciplinary actions'. Counseling sheets are not typically added to the permanent service record unless they are part of a formal disciplinary process. They are primarily used as tools for professional development and mentorship, and are not automatically included in official service records. They could, however, be used to establish a pattern of behavior if disciplinary action becomes necessary.