The following text is for questions 74 to 76.

    An estimated 10% to 20% of Mauritania's 3.4 million people are enslaved - in "real slavery," according to the United Nations special rapporteur on contemporary forms of slavery, Gulnara Shahinian. If that's not unbelievable enough, consider that Mauritania was the last country in the world to abolish slavery. That happened in 1981, nearly 120 years after Abraham Lincoln issued the Emancipation Proclamation in the United States. It wasn't until five years ago, in 2007, that Mauritania passed a law that criminalized the act of owning another person. So far, only one case has been successfully prosecuted.

    Even knowing those facts before we departed, what we found on the ground in West Africa astonished us. Mauritania feels stuck in time in ways both quaint and sinister. It's a place where camels and goats roam the streets alongside dented French sedans; where silky sand dunes give the land the look of a meringue pie topping; where desert winds play with the cloaks of nomadic herdsmen, making their silhouettes look like dancing flames 237 on the horizon; and where, incredibly, the nuances of a person's skin color and family history determine whether he or she will be free or enslaved.

http://edition.cnn.com/interactive/2012/03/world/mauritania.slaverys.last.stronghold/

Which of the following words undermines the meaning of "rapporteur'?