The fact that 43 percent of people filing income tax returns in 2013 paid no income tax at all is partly explained by the fact that the income tax is __________.

Milgram defended his research by pointing out that he

a. did not intend to harm anybody and could not foresee the problems that occurred. b. engaged both in debriefing and in dehoaxing of participants after the study ended. c. paid participants well enough to overcome any discomfort they had experienced. d. the research was so important that it was acceptable, even if a few people were harmed.

Where did the 2014 Ebola outbreak originate?

a. Niger. b. Guinea. c. Indonesia. d. South Sudan.