What is the story, first of all
the summary indicates the story so she could pass the exam that's why we had to answer
I live in China tooo lol answering hush’snznzjs
Answer: 3. The more years spent smoking, the less optimistic for success
Explanation:
Two variables having a negative relationship means that they have an inverse correlation: if one of the variables decreases, the other one rises, if one variable rises, the other one decreases.
In this example, those who have spent more years smoking (a variable that rises), are less optimistic about the success of treatment (the variable that decreases).