I am not sure why b is false. If teenagers believe they are right and adults are wrong, they are thinking in a dualistic way, are they not? Also I do not see the quote that you use in for B concerning dualistic thinkers deference for adult authority.

The quote from answer B is "slaves to the generralizations of their authorities." I don't see it in the text.

I can not find a reason that B is wrong. The explanation does not match the text.

Let us take a look at this and correct it if there is an issue. Sorry for the inconvenience.

Cef Usa, I do not see anything wrong with the explanation. Quoted: "This is an extension question. Statement A is true. This is the essential characteristic of dualistic (right/wrong) thinkers. Statement B is false. Dualistic thinkers grant authority (right thinking) to adults and adult figures. This is clear from the sentence, “These students are slaves to the generalizations of their authorities.” Statement C is true since Dualistic thinkers believe their group is right and the other group is wrong. The answer, therefore, is (A) and (C)."

I see the problem now. There is a missing sentence in the passage as Matthew Lord had pointed out. Let me consult the author.

Here is a correction from the author (we will also correct this in the next updated version). We apologize for the confusion. The paragraph with the missing sentence is as follows:

Most students arrive at [college] using “discrete, concrete, and absolute categories to understand people, knowledge, and values.” These students live with a dualistic view, seeing “the world in polar terms of we-right-good vs. other-wrong-bad.” These students cannot acknowledge the existence of more than one point of view toward any issue. There is one “right” way. And because these absolutes are assumed by or imposed on the individual from external authority, they cannot be personally substantiated or authenticated by experience. These students are slaves to the generalizations of their authorities.