In which publication can a local unit find information on requesting ammunition for a training exercise?

The correct choice is that information on requesting ammunition for a training exercise can typically be found in AR 700-84. This regulation specifically focuses on the distribution and management of ammunition supply operations, which includes guidelines for requisitioning ammunition for training purposes. It outlines procedures that local units must follow when requesting ammunition, ensuring they adhere to safety and accountability measures.

Other options deal with different aspects of military operations: AR 385-10 primarily addresses safety programs, AR 190-11 focuses on security related to arms, ammunition, and explosives, and AR 600-55 pertains to the licensing of operators of motor vehicles. Each of these publications serves important roles but does not specifically cover the ammunition request process for training exercises.