What types of components may require redesign during a rebuild?

The correct choice highlights that components which do not perform adequately during tests are most likely to require redesign when going through a rebuild. This is because the primary goal of a rebuild is to improve functionality and ensure reliability in the system. If a component is underperforming or failing to meet required specifications, it is essential to assess and redesign that component to enhance overall system performance and safety.

Redesigning components that are not functioning effectively ensures that any deficiencies are addressed, resulting in improved efficiency and effectiveness in the reconfigured system. This process is a critical part of the rebuild, as it helps to identify and rectify issues that may hinder the operational capabilities of the entire assembly.