A bushing is a component that __________.

A bushing is a cylindrical lining primarily designed to provide a low-friction surface between moving parts. In this context, the main function of a bushing is to support rotating shafts and minimize wear and tear between components. It typically provides a bearing surface that allows for smooth rotation and movement.

When examining the role of a bushing in attaching a sheave to its shaft, this application is significant because it allows the sheave to rotate freely on the shaft while ensuring stability and proper alignment. This is crucial for maintaining the efficiency of a drive system, as misalignment can lead to excessive wear, noise, and reduced performance.

While many other options might seemingly relate to the functions of various components in a drive system, the specific focus of a bushing effectively ties back to its role in allowing components like sheaves to connect and operate fluidly without excess friction or misalignment. Thus, the statement about attaching a sheave to its shaft accurately describes a key use of bushings in mechanical drives.