Final answer:
To configure email on a customer's computer, the correct ports for POP3 and SMTP are 110 and 25 respectively.
Step-by-step explanation:
In order to configure email on a customer's computer, you need to know the correct ports for the POP3 (Post Office Protocol 3) and SMTP (Simple Mail Transfer Protocol) protocols.
The correct ports for POP3 and SMTP are:
- POP3: Port 110
- SMTP: Port 25
Therefore, the correct option is c. 110, 25.