​Some Poor Countries Appear to Be Falling Behind Rather Than

Multiple Choice

​Some poor countries appear to be falling behind rather than catching up with rich countries. Which of the following could explain the failure of a poor country to catch up?

A) The poor country has a health epidemic such as the Zika virus
B) ​The poor country imposes heavy tariffs to protect infant industries
C) ​The poor country has many corrupt officials
D) ​All of the above