Introduction to APT Language and Incremental Coordinate Mode:
APT (Automatically Programmed Tool) is a high-level programming language that is used to control and program machine tools, such as milling machines and lathes. It allows users to define the tool's movements and operations by specifying the desired coordinates and motions.

In APT language, the cutter motion can be controlled in two different coordinate modes: incremental and absolute. In incremental coordinate mode, the tool's position is defined relative to its current position, while in absolute coordinate mode, the tool's position is defined with respect to a fixed reference point.

Addressing Cutter Motion in APT Language:
When addressing the cutter motion in APT language, the correct syntax to be used in incremental coordinate mode is "GO/TO". This syntax is used to specify the desired position that the tool should move to.

Explanation of the Correct Answer:
The correct answer, option 'B' - GO/TO, is the appropriate syntax to address the cutter motion in incremental coordinate mode.

This syntax consists of the following components:
1. "GO": This keyword is used to indicate that the tool should move to the specified position.
2. "/": This character is used to separate the keyword "GO" from the keyword "TO".
3. "TO": This keyword is used to specify the target position that the tool should move to.

By using the "GO/TO" syntax, the APT program can accurately control the tool's movements in incremental coordinate mode. The program will calculate the relative position based on the current tool position and move the tool accordingly.

Advantages of Using Incremental Coordinate Mode:
1. Flexibility: Incremental coordinate mode allows for more flexibility in programming as the tool's position is defined relative to its current position. This makes it easier to perform complex machining operations.
2. Error Correction: Since the tool's position is defined incrementally, any errors or interruptions during machining can be easily corrected by specifying a new relative position.
3. Reduced Programming Effort: Incremental coordinate mode eliminates the need for repeatedly specifying the absolute position of the tool, resulting in shorter and more concise programs.

Conclusion:
In APT language, the correct syntax to address the cutter motion in incremental coordinate mode is "GO/TO". This syntax allows the programmer to specify the desired position that the tool should move to, relative to its current position. By using incremental coordinate mode, programmers can achieve greater flexibility, error correction capabilities, and reduced programming effort.