In what manner can expendable supplies be requisitioned?

The correct answer reflects the various methods available for requisitioning expendable supplies. Specifically, expendable supplies can be ordered through several communication methods, including radio, telephone, or electronic means. This flexibility in requisitioning is crucial in military and operational contexts where timely procurement of materials can directly influence mission success.

The available methods—radio for quick communication in tactical environments, telephone for direct interaction, and electronic means for efficiency—ensure that personnel can effectively request supplies based on the circumstances they face. This variety also caters to different situations, ensuring requisitioning can happen regardless of location or technological limitations.

Other options are limited in scope. Relying solely on email or mail would hinder responsiveness, while exclusively using online systems may not account for scenarios where internet access is unavailable. Hence, having multiple communication channels enhances operational capability in managing supply requisitions.