Which of the Following Is the Best Example of the Challenges

Which of the following is the best example of the challenges to globalization in the modern world?

A) Arab Spring uprisings lead to uncertain results in Middle Eastern and North African countries.
B) Developing economies push for reforms in the United Nations General Assembly.
C) The value of currencies fluctuate now that there is no more gold standard.
D) China and Russia refuse to fully open their borders to international trade.
E) The United States brings trade dispute cases to the World Trade Organization.