What must all levels of command do to execute the MEFs?

The correct option emphasizes the essential actions needed for all levels of command to execute the Multi-Service Force (MEFs). To effectively carry out MEFs, command levels must engage in thorough planning, ensure that appropriate budgeting is in place, and maintain a state of preparedness.

Planning involves outlining operational objectives, coordinating with various units, and determining the resources required for successful execution. Budgeting ensures that financial resources are allocated appropriately for the necessary training, equipment, and personnel. Preparedness means that all levels of command must be ready to respond to missions or contingencies that may arise, which includes having strategies, resources, and personnel ready to deploy as needed.

While conducting training and drills, maintaining equipment readiness, and establishing communication protocols are important aspects of military operations, they fall under the broader umbrella of planning, budgeting, and preparedness. Without a comprehensive approach that includes all three components, executing the MEFs effectively would be challenging.