According to ich e6 gcp, an inspection is defined as:

According to ich e6 gcp, an inspection is defined or describe as the act by a regulatory authority of conducting an official review of documents, facilities, records, and any other resources that are deemed by the authority to be related to the clinical trial and that may be located at the site of the trial, at the sponsor's and/or contract research organization's facilities, or at other establishments deemed appropriate by the regulatory authority.

Ithink the answer is d.