Which statement is true about using three Line Tracking Sensors for a robot?

Using three Line Tracking Sensors allows a robot to accurately follow a line on the ground. This accuracy is achieved by having one sensor positioned on the left side of the robot, one in the center, and one on the right side. When the sensors detect the line, they provide feedback that helps the robot determine its position relative to the line. If the center sensor is off the line, the robot can adjust its movement based on which of the other sensors detects the line, ensuring it stays on track.

This method of line following allows for more precise navigation compared to using just a single sensor, as the robot can continuously monitor its position relative to the line and make adjustments as necessary. This is particularly important in navigating complex paths or curves.

The other options suggest methodologies or assumptions that do not reflect the best practices for utilizing multiple sensors in line tracking. For instance, the notion that sensors must check in specific sequential order is unnecessary for accurate tracking, as simultaneous readings are more effective. Adjustments to the threshold can significantly impact performance, making it critical to calibrate sensors properly for optimal functioning. Finally, relying solely on the left sensor can limit the robot's ability to effectively correct its course when misaligned with the line.