What are dipper stick extensions used for?

Dipper stick extensions are designed specifically to increase the digging depth of a backhoe. By adding length to the dipper stick, operators can reach deeper into the ground without needing to reposition the entire machine. This is particularly useful when working in situations where deeper excavations are required, such as trenching or digging foundations.

The other choices touch on different aspects of backhoe operation but do not accurately describe the function of dipper stick extensions. For instance, while stability is crucial for safe operation, dipper stick extensions primarily impact depth rather than stabilization. Similarly, while width can facilitate different operational tasks, dipper stick extensions do not change the physical width of the backhoe. Additionally, the load capacity of a backhoe is determined by other factors, and a dipper stick extension does not inherently increase the weight it can lift or carry. Therefore, the main purpose of dipper stick extensions is to enhance the digging depth, making option B the correct choice.