Parts labeled as "Hold" should be inspected to determine what action should be taken?

Parts labeled as "Hold" indicate that they have been identified as potentially defective or not meeting quality standards. The primary purpose of this labeling is to prevent these parts from being used or shipped until their quality has been assessed and a determination made regarding their status.

Therefore, inspecting these parts is essential in deciding whether they can be reworked to meet quality standards or whether they must be scrapped if they cannot be salvaged. This step is crucial for maintaining overall product quality and ensuring that defective components do not reach customers, which could lead to further issues such as returns or damage to the brand's reputation.

The other actions listed are less appropriate in this context. Shipping directly, returning to the supplier, or ignoring the labeled parts would neglect the quality assurance process that the "Hold" label is meant to enforce, potentially leading to serious quality control failures. Thus, the inspection that results in determining whether the parts should be reworked or scrapped is a vital part of effective quality management practices.