Which of the following encryption methods does PKI typically use to securely protect keys? a. Elliptic curve b. Digital signatures c. Asymmetric d. Obfuscation

B. Digital Signature

Explanation:

Digital signature is an electronic signatures.  They are used to authenticate the identity of a person sending the message. It ensures that the original content of the document or message remains unchanged. Digital signatures cannot be imitated. There are three types of digital signature certificates:

Sign Digital Signature Certificate  

Encrypt Digital Signature Certificate  

Sign & Encrypt Digital Signature Certificate

answer is:

a). backstage view

explanation:

backstage view is the area where files and data about them is managed— creating, saving, printing, sending to others, inspecting for hidden metadata or personal information, and setting options. so in this way we can add many things to our document swiftly.

i hope you get the idea.