Final answer:
The valid IP address for an individual host in the options given is 192.168.4.2. It is correctly formatted in dotted decimal notation and all octets are within the valid range of 0 to 255.
Step-by-step explanation:
The question is asking which IP address, expressed in dotted decimal notation, is a valid address for an individual host. An IP address consists of four octets, each ranging from 0 to 255. Looking at the options provided, 192.168.4.2 is the only IP address that follows the correct format and falls within the valid range for each octet.
Here's why the other options are invalid: '258.198.3.160' has an octet exceeding 255; '255.255.0255' is not a properly formatted IP address due to the leading zero and what appears to be a missing dot; '128-5ef-297' is not in dotted decimal notation. Therefore, 192.168.4.2 is the valid IP address that could be used for an individual host.