Answer:
B. Tonga . . . Papua New Guinea
Step-by-step explanation:
Tonga is a Polynesian kingdom of more than 170 South Pacific islands, many of which are uninhabited. It was a protected state of the United Kingdom until 1970 when there was a separation. It is the South Pacific's last Polynesian kingdom and it is a constitutional hereditary monarchy.
Papua New Guinea is found in the southwestern Pacific and it comprises of the eastern half of New Guinea and its offshore islands. The government is a parliamentary democracy.