Select valid MAC address:

A valid MAC address must conform to specific formatting standards that typically include six pairs of hexadecimal digits, separated by colons or hyphens. Each pair represents an octet of the MAC address.

The chosen answer aligns with this standard, showcasing a typical MAC address format where each pair (00, 00, 5E, 80, EE, B0) consists of two hexadecimal characters (0-9, A-F).

On the other hand, the first option includes characters that are not valid hexadecimal digits (G and H), the third option exceeds the standard length for a MAC address, and the fourth option is an IP address with CIDR notation, which does not represent a MAC address structure at all. This highlights the importance of adhering to the correct format to identify MAC addresses accurately in networking scenarios.