GMAT Critical Reasoning (CR) | Re: The number of people diagnosed with tuberculosis in a

Such cases in which X , stated reason , leads to . can lead to / possibly lead to Y (conclusion),
presenting Z , a new causal reason , will not weaken the possibility of X as stated reason.

The answer is not an alternate cause. The coorect answer will be a option , which says that the current scenario is leading to Y conclusion and by doing this, it weakens the conclusion that the changed scenario (closing coal fact) will lead to decreased number of cases

---