It should be 1929 - 1932 because that's when it dropped the most. All of the other choices have sections where it rises back up.
The correct answer to this open question is the following.
Although there are no options attached we can say the following.
What human rights issues did Reagan encounter during his battle against communism in the 1980s?
At the very beginning of his administration, United States President Ronald Reagan clearly showed he was not in favor of the human rights approach instilled and inherited by his predecessor Jimmy Carter.
With the support of its ally, the United Kingdom, Reagan decided to take a series of actions to stop Communism, as was the case of the Iran-Contra Affair, the bombing of Beirut, and the bombing of Lybia, The international community questioned these Reagan's Doctrine actions, and one of the observations was his careless approach to human rights.
But the Reagan's most questionable issue on human rights was the controversial acts of the School of the Americas training program overseen by the CIA and teh Pentagon in Central America. It is said that the agency trained Central American armies in torture to fight populists and communist governments. The US government was accused to commit human rights violations to the degree that teh Pentagon had to publicly publish its training manuals.
