Which statement best describes End-to-End Encryption in this context?

• A. Data that's encrypted only during transmission
• B. Data that's encrypted while both at rest and in motion
• C. Data stored in plaintext on servers
• D. Data that is decrypted at each intermediate server

Answer: (B)

End-to-End Encryption means that only the sender and the intended recipient can read the data; the service or any intermediaries only ever see ciphertext. In this context, the best description is that data is encrypted both at rest and in motion, because it remains encrypted while stored on servers and while it’s transmitted between devices, so intermediaries can’t decrypt it. The other statements don’t fit: encryption only during transmission misses protection when stored; plaintext on servers means the content isn’t protected at all on storage; decrypting at intermediate servers would expose the data to those servers.