Final answer:
The IP addresses 192.168.1.0 and 192.168.2.0 are network addresses and cannot be assigned to devices. Without subnet masks, we cannot determine the exact assignable IP addresses for wrk1 a and wrk5 c.
Step-by-step explanation:
When considering IP addressing for a network, you cannot assign the network address, which is the first IP address in the subnet (like 192.168.1.0), to a host like wrk1 a or wrk5 c. You have to use assignable IP addresses within the subnets.
When connecting wrk1 a to subneta, you would use an IP address within the range of the subnet, excluding the network and broadcast addresses. Similarly, wrk5 c would need an IP address within subnetc. However, without the specific details of the subnet mask, we cannot determine the exact assignable IP addresses. The addresses 192.168.1.0 and 192.168.2.0 given in options 'a' and 'd' are network addresses and cannot be used for host devices.
The correct answer would likely include IP addresses within the subnets that are not the network address (ends with .0) or the broadcast address (ends with .255). For example, it could be any address with the last octet between 1 and 254, assuming standard subnet masks such as 255.255.255.0. Since options 'b' and 'c' also include network addresses, the information provided is insufficient to give a definitive answer.