Read this paragraph from Yves's analysis of Enrique's Journey. (1) Nazario draws on Enrique's experience to illustrate what children face in their attempt to escape difficult conditions. (2) She describes the dangers he faces on his journey northward. (3) The threat of extortion and violence from gangsters illustrates how vulnerable such children are. (4) But gangsters do not pose the only threat. (5) Even the police, whose job is to uphold and enforce the law, steal from the migrants. (6) What I find most unsettling, though, is Enrique's temporary alliance with an MS gangster.

Which sentence should Yves revise to make it more objective?

the first sentence
the third sentence
the fifth sentence
the sixth sentence