The probes on the DFSG are not fixed.

• A. They are fixed distance apart
• B. They are not fixed
• C. They are pliable
• D. They rotate

Answer: (B)

The main idea here is that the two probe tips on the DFSG can change their distance from each other rather than being locked at a single spacing. This adjustability matters because training with variable probe separation better mirrors real-world scenarios where targets differ in size, clothing, and position. Being able to vary the spacing allows you to practice making contact at multiple standoff distances and angles, which improves realism and effectiveness of practice. If the probes were fixed, you’d be limited to one spacing, making the training less flexible and less representative of actual use. The option that the probes are not fixed captures this necessary flexibility, rather than implying they are simply pliable or that they rotate.