Which of the following adjustments can aid in solving "z-wobble" issues?

Calibrating the Z-axis properly is critical in addressing "z-wobble" issues because it directly influences the printer's ability to maintain consistent vertical alignment throughout a print. Z-wobble is often caused by misalignment in the Z-axis movement or an uneven print bed. When the Z-axis is not calibrated correctly, it can result in layers being printed at inconsistent heights, leading to visible artifacts and geometric inaccuracies in the final print.

By ensuring that the Z-axis is calibrated, the nozzle moves up and down precisely as intended, allowing for uniform layer deposits. This helps in achieving better adhesion and layer bonding, which are essential for producing stable and high-quality prints. Proper calibration involves checking that the distance between the nozzle and the print bed is consistent across all areas, which minimizes any potential wobbling introduced by mechanical inaccuracies.