Which of the following are the three main types of rigging equipment?

The three main types of rigging equipment consist of slings, shackles, and hoists, making this option the correct choice.

Slings are used to securely attach loads to lifting devices; they can be made from various materials, each suited for different applications and load capacities. Shackles serve as connectors in rigging systems, providing a reliable means to connect slings to anchors or other lifting devices. Hoists are mechanical devices that are essential for lifting and lowering loads; they enable the safe and efficient movement of heavy items and can be manual or powered.

When considering the other options, while ropes, chains, hooks, pulleys, wires, cables, and belts all play a role in rigging and lifting applications, they do not encompass the fundamental trio that ensures proper load handling from attachment to lifting and securing. The terms in the other choices relate to various components that can be part of a rigging system but do not represent the key categories that are essential for basic rigging practice. Understanding these three primary components is crucial for anyone involved in industrial rigging, as they form the backbone of safe and effective lifting operations.