Final answer:
The correct needling technique for LR-13 (Zhang Men) is to needle perpendicularly at a depth of 1.0-1.5 cun. It's crucial to use proper needling methods in acupuncture to ensure effectiveness and safety.
Step-by-step explanation:
The correct method for needling LR-13 (Zhang Men) according to Traditional Chinese Medicine (TCM) and Comprehensive Acupuncture (CAM) is option 2) Perpendicularly 1.0-1.5 cun. This acupuncture point is located on the lateral side of the abdomen, below the free end of the eleventh rib. Precise needling techniques, such as depth and direction, are important for achieving the desired therapeutic effects and avoiding injury. It's essential to follow proper protocols and guidelines while performing acupuncture to ensure patient safety and efficacy of the treatment.