Joint prepares individuals, joint forces, or joint staffs to respond to strategic, operational, or tactical requirements considered necessary by the combatant commanders to execute their assigned or anticipated missions.
a. doctrine
b. education
c. training
d. concepts

C. Training

Explanation:

The Joint Training System (JTS) defines a multi-step approach to identify training requirements, plan, execute, and assess joint training events. First, and foremost, the JTS is focused on warfighting. "The specific objective is to develop a joint training program that bolsters the combatant commanders' ability to execute the National Military Strategy while simultaneously maintaining high readiness of our forces as a pro-requisite to deterring aggression and responding to crisis. The desired end state is the improved readiness of joint forces, a training and exercise strategy better aligned with the National Military Strategy, improved interoperability, and a more stable process for optimizing the application of scarce resources (dollars, forces, time)." Successful implementation of the JTS depends upon automating the system's processes so that the development, sharing, and reporting of training information and products is conducted as efficiently and effectively as possible