The economic consequence which doesn't relate to obesity in this case would be D - the cost of services for chemotherapy. The amount of money that chemotherapy costs is largely unrelated to obesity levels either of the one who's giving it or the one who's receiving it.
The answer isn't false, in fact its true.
Given the scenario above the Spencer is dealing with schizophrenia and his thoughts are difficult to understand because he jumps from one idea to another, what Spencer is creating is what we call WORD SALAD. Word Salad is when there are different words or phrases with different meanings and thoughts that are mixed in one sentence. Hope this helps.