Answer
b. leads to social preferences that are not transitive
Work Step by Step
The Condorcet paradox shows that majority rule fails to produce a ranking of outcomes that always satisfies transitivity. As an example, A > B and B > C, then A should beat C in a transitive scenario. However, if C > A in the next result, it would clearly indicate that the results in a result that is not transitive since A does not beat C.