Which of the following is a type of robotic arm based on motion configuration?

Articulated robotic arms are designed with a series of joints that allow for a wide range of motion, closely mimicking the natural movement of a human arm. These joints can rotate and pivot, providing flexibility and the ability to perform complex tasks in three-dimensional space. Articulated robots are particularly useful in applications such as assembly, welding, and material handling, where precise and agile movement is required.

In contrast, the other options either do not represent types of robotic arms based on motion configuration or are too generic. Static configurations lack the ability to move, making them unsuitable for tasks that require adaptability. Rigid designs refer to structures that do not possess the flexibility necessary for dynamic interactions. Linear robots, while they do move in straight lines, do not have the multiple degrees of freedom offered by articulated structures, limiting their range of operation compared to articulated arms.

Thus, the articulated robotic arm stands out as the correct answer due to its advanced motion capabilities, making it essential for a variety of applications in the robotics field.