Which of the following protocols allows a workstation to dynamically access mail drops on a server host in a useful manner?

Answer: Option C

Option A: SNMP is used for managing network devices, not for getting emails.

Option B: ICMP helps computers communicate about network problems (like "ping"). It's not related to email.

Option C: POP3 is the answer! This is a protocol that lets your computer download emails from the server to your computer.

Option D: DHCP is used for giving computers their network addresses (IP addresses). It's not involved in getting emails.

Therefore, the correct answer is C: POP3.