Critical Reasoning (CR) | Re: A recent study found that snoring, though not common

Hi,

I have gone through the explanations in the thread below, but still fail to understand the logic:

Option A: "Stress induces both snoring and smoking in certain individuals". Though this option provides a new source that induces snoring apart from smoking, but it does not say anything about people without stress but who smoke. What about these people do they snore or not?

Option D: "Most smokers do not sore". This directly deals with the conclusion. It presents a fact