### What does the sender need in order to digitally sign an email?

- The public key of the recipient
- The public key of the sender
- The private key of the recipient
- The private key of the sender

#### EXPLANATION

A digital signature is created by hashing a message and encrypting the hash with the sender's private key. The recipient can then decrypt the hash with the sender's public key. The recipient's keys are not used for a digital signature.A general overview of this process can be found here https://www.docusign.com/how-it-works/electronic-signature/digital-signature/digital-signature-faq