Answer:
D. All options are correct.
Step-by-step explanation:
Considering all the available option in the question Unifying organizations such as SEATO, Arab League, NATO, or the European Union leads to the following:
1. Increase globalization
2. Have been used to raise the standard of living of people living within their jurisdiction
3. Focus on promoting each area's interests
Hence, in this case, the correct answer is option D, "All options are correct."