What best describes a SCARA robot?

A SCARA robot, which stands for Selective Compliance Articulated Robot Arm, is specifically designed to excel in performing tasks primarily in the horizontal plane, which is the x and y directions. This design allows it to handle components efficiently on assembly lines, particularly in tasks such as pick and place operations, as well as light assembly duties.

The unique joint configuration of a SCARA robot offers compliance in the horizontal plane while maintaining rigidity in the vertical direction. This means it can move with flexibility along the x and y axes, making it ideal for precision work that requires handling parts and tools across a flat surface.

While the robot is capable of some vertical movement, the main advantage lies in its ability to maneuver laterally with speed and accuracy, which supports high throughput in manufacturing environments. This makes option C the most accurate description of a SCARA robot, as it highlights its strength in the horizontal movement across specific plane dimensions.