What army regulation establishes the mandated standards for writing?

The correct answer is AR-25-50, which is the Army regulation that establishes the mandated standards for writing within the Army. This regulation provides guidelines on the format, style, and procedures for preparing and processing Army correspondence, ensuring that all written communications are clear and effective.

AR-25-50 focuses on the standardization of Army communications, including memos, letters, and reports. This helps maintain consistency across all levels of command and ensures that essential information is conveyed effectively. By adhering to the standards in AR-25-50, Army personnel can improve the clarity of their writing and ensure that their correspondence meets established requirements.

The other options relate to different aspects of Army operations. AR-25-30 deals primarily with the management of Army publications and forms, while AR-300-1 focuses on personnel strength management. AR-600-20 covers Army command policy, including the responsibilities of leaders, but does not specifically address standards for writing.