Multicast IP addresses fall within the range of 224.0.0.0 to 239.255.255.255.
Based on the options provided:
- 221.22.20.2 - Not a multicast address (it's a unicast address)
- 223.3.40.2 - This is a multicast address (falls within the range)
- 238.20.80.4 - This is a multicast address (falls within the range)
- 240.34.22.12 - Not a multicast address (it's generally reserved for future use)
Therefore, the correct multicast addresses from the list are 223.3.40.2 and 238.20.80.4. If you need just one answer, either of these can be accepted, but for direct selection, 223.3.40.2 is the first option available that is a multicast address.