OE
There are “allegations of preferential treatment,” or unfairness, at the local level, and these are threatening to spill over into criticisms that the system is unfair or partial at the national level. The sentence indicates, however, that the system’s fairness is “not currently in dispute” at that level, so the blank requires synonyms for fairness or impartiality. The correct answers are “equity” and “probity” (integrity, honesty). The words “unfairness” and “partiality,” which means favoritism, are opposite the desired meaning. “Solemnity,” which describes a serious and proper state of being, and “solicitousness,” which means hovering attentiveness, are not correct because they do not fit the desired meaning and do not have a match.
Answer: C,D