What statement should the lead monitor say to begin the MTC?

The phrase "Ready, go!" is the standard command used by the lead monitor to initiate the Marine Corps Combat Fitness Test (CFT) event. This command is essential as it establishes a clear and concise cue for all participants that they should be prepared both physically and mentally for the upcoming activity. The structure of the command, which includes a clear “Ready” followed by “go,” provides participants with a moment to focus and prepare to start the test efficiently. This method ensures that everyone starts at the same time, maintaining the integrity and fairness of the test. The other options lack the necessary clarity and standardization expected in this official context.