Which of the following should be avoided when carrying cargo?

Answer: B — Fasten excess cargo to the sissy bar

When carrying cargo on a motorcycle, it is important to secure the load properly to ensure safety on the road. Fastening excess cargo to the sissy bar can be dangerous because it can affect the balance and maneuverability of the motorcycle. It may also obstruct the rider's view or interfere with other essential motorcycle controls. Therefore, it should be avoided when carrying cargo. Options A, C, and D are all safe and recommended methods of securing cargo on a motorcycle. Securing cargo with bungee cords, using a cargo net, and putting cargo in saddlebags are all effective ways to secure items on a motorcycle without compromising safety.