Which of the Following Is One Possible Explanation for the Change

Multiple Choice

Which of the following is one possible explanation for the change in the natural rate of unemployment in Australia during the 1990s?

A) Contractionary fiscal policy.
B) Increased globalisation and stronger competition.
C) A decrease in benefits paid to workers by firms.
D) Contractionary monetary policy.
E) An increase in the proportion of labour contracts that were indexed.