C. identifies usersExplanation;A certificate refers to an electronic document that is used to identify users, such as an individual, a server, a company, or other entity and also to associate the identity with a public key.The certificates provides generally recognized proof of the identity of a person. The public key uses these certificates to address the impersonation problems.Certificates also includes the name of the entity it identifies, and an expiration date, the name of the certificates authorities that issued the certificate, and a serial number.
B. Scrambled data
C. Identifies users
The first mission of a security certificate is to encrypt/scramble data so if someone intercepts it, they won't be able to read it.
The second mission is to reassure the Website visitors that the company behind the Website you're dealing with is really who they are. It identifies the user of the security certificate, not the user of the Website.
The other functions described in A, D and E are local configurations done by the Website administrator, while the security certificate is managed by an external authority.
the anwser is ethier d or e