According to the ISO 9000:2015 - Quality management systems — Fundamentals and vocabulary, correction is defined as “action to eliminate a detected nonconformity”. A nonconformity is defined as “non-fulfilment of a requirement”. Therefore, the process of modifying a non-conforming product to bring it within acceptance criteria is a correction, as it eliminates the non-fulfilment of the product specification. The other options are not correct, as they have different definitions and purposes:

•Concession: permission to release or use a nonconforming product, service or process

•Corrective action: action to eliminate the cause of a nonconformity and to prevent recurrence

•Preventive action: action to eliminate the cause of a potential nonconformity or other undesirable potential situation