What does the stacker use to support the goods?

The correct choice is that the stacker uses a fork to support the goods. Forks are integral components of a stacker, allowing it to lift and transport items efficiently. They are designed specifically to slide under pallets or other loads, enabling the stacker to elevate and maneuver goods safely.

In the context of material handling, the fork is essential because it distributes the weight of the goods across its length, preventing damage to the items and ensuring stability during transport. This function is particularly important when stacking loads, as it provides the necessary support to lift goods to various heights while maintaining balance.

Other options may include tools and equipment relevant to material handling, but they do not serve the same direct purpose as forks in the operation of a stacker. For instance, cranes are typically used for lifting heavy loads vertically, but they do not have the same functionality as forks for moving and stacking goods. Similarly, shuttles and pallets play different roles in logistics and storage but are not specific to the supporting mechanism of a stacker's lifting capability.