Unleash Your Inner Engineer 2025 – Conquer the VEX Robotics STEM Challenge!

The most effective command for extending movement duration to 10 seconds is the one that accurately reflects the desired time in milliseconds. In this context, the command that achieves a 10-second wait is `wait1msec(10000)`, as it specifies a wait time of 10,000 milliseconds. This command effectively halts program execution for the specified duration, allowing for control over the robot's timing.

The other options do not provide the correct duration needed. For instance, the command that waits for 1 second will only pause for 1,000 milliseconds, and the command that specifies a wait of 5 seconds will pause for 5,000 milliseconds. `wait10sec()` is also a viable choice since it clearly indicates a 10-second wait; however, it is not the option chosen in this instance. The correct command for extending movement duration to the specified time is one that accurately matches the 10 seconds with the appropriate milliseconds.