To find the disagreement in this argument, we must first look for a topic that both persons discuss. Let's paraphrase what each person says:
Tania: A good art critic is biased (unfair). One can be fair only if one isn't interested. Are is a passion. Good art criticism must be emotional.
Monique. Are is not just a passion. The best art critics passionately engage with art. The best art critics are unbiased.
The only topic about which both speak -- and disagree-- is (B), whether a good art critic, or the criticism that critic would produce is fair biased or not.
(A) is only discussed by Monique. Tania says that art is a passion, but does not say whether it is only a passion. For example, I could say that the neighbor's dog is a hero, but this does not mean I necessarily don't also think that the dog is also a bother.
(C) is not discussed by either person. Tania does not mention what art critics should do.
(D) is not discussed by either person, though this may be an assumption we bring to the argument.
(E) is not discussed by either person.