What distinguishes cartridge-based stun devices from direct-contact devices?

• A. Direct-contact devices require contact to deliver energy
• B. Cartridge-based devices propel darts to deliver the pulse
• C. Cartridge-based devices deliver energy only through contact
• D. Direct-contact devices propel darts to deliver the pulse

Answer: (B)

The main idea is how energy is delivered to the target. Cartridge-based devices use a cartridge to fire a small dart that carries the electrical pulse to the target, allowing the user to deliver energy at a distance. The energy is transferred when the dart makes contact with the target, but the key difference is that a projectile is involved at all—the pulse is delivered through the dart.

Direct-contact devices, on the other hand, require physical contact with the device itself to deliver energy, without firing a projectile. The energy path is from the device directly to the target upon contact.

So, the distinguishing feature is the use of a fired dart propelled by a cartridge to deliver the pulse, which is why this option is the best.