Customer Service Specialist (CSS) Practice Exam 2026 - Free Customer Service Specialist Practice Questions and Study Guide

The option that represents a valid email address is johndoe@generic.edu.

This format follows the standard structure of email addresses, which typically consists of a local part (in this case, johndoe) followed by the "@" symbol and then the domain part (generic.edu). The domain part includes a hierarchical domain name that is typically structured to end with a well-recognized top-level domain (TLD), such as .com, .org, .edu, etc.

This structure ensures that electronic mail can be correctly routed to the right server, which is crucial for efficient communication. Educational institutions commonly use the .edu TLD, making this a legitimate and valid email address.

The other options either lack parts of this structure or do not conform to standard email formats, which is why they do not qualify as valid email addresses.