Final answer:
A basic CNC milling machine has three axes of movement, allowing it to maneuver a tool or materials in three-dimensional space to achieve precise cutting and shaping.
Step-by-step explanation:
A basic CNC milling machine typically has three axes of movement, which are the X-axis, Y-axis, and Z-axis. These three axes allow the machine to move a tool or a piece of material in three dimensions. The X-axis moves left and right, the Y-axis moves forward and backward, and the Z-axis moves up and down. This combination of movements allows for the cutting and shaping of materials into various parts and components with high precision. Thus, the correct answer is C. three.