most countries of south pacific region:

A)came independent in the 1700s
b)came independent in the 1800s
C)came independent in the 1900s
D)**have yet to achieve independence

That depends upon whether you include Australia and New Zealand, which of course are independent countries.

http://www.mapsouthpacific.com/pacific/index.html

To find the answer to the question of when most countries in the South Pacific region gained their independence, we can do a brief historical analysis.

The South Pacific region consists of numerous small islands and countries. The process of gaining independence varied among these countries, so it's essential to evaluate each one individually. However, as a general overview, the most common time period for independence in the South Pacific region is option C) during the 1900s.

A brief breakdown of the independence timeline for some countries in the South Pacific region is as follows:

1. Fiji: Fiji gained independence from British colonial rule on October 10, 1970.
2. Papua New Guinea: Papua New Guinea gained independence from Australia on September 16, 1975.
3. Samoa: Samoa gained independence from New Zealand on January 1, 1962.
4. Tonga: Tonga is unique because it was never colonized and has always maintained its independence.

These examples demonstrate that the majority of countries in the South Pacific region gained independence during the 1900s. Therefore, option C) is the correct answer.