Final answer:
The incoming email protocols that are encrypted and secure because they use SSL/TLS are IMAPS and POP3S. These protocols provide encryption of email data during transmission, protecting it from interception.
Step-by-step explanation:
The question is asking about which incoming email protocols use an SSL/TLS session for encryption and secure communication. The correct answers are a) IMAPS and d) POP3S. Both IMAPS and POP3S are secure versions of the standard protocols IMAP and POP3.
IMAPS operates over port 993 and encrypts all data between the mail client and server using SSL/TLS, ensuring that sensitive information is not easily intercepted by third parties. POP3S, similar to IMAPS, uses SSL/TLS for encryption and typically operates over port 995.