Answer:
c. the two changes are unrelated.
Explanation:
In the case when the company is engaged in the social listening so it would be noticed that there is a rise in the social media volume that reduced the sentiment of the company
So the above situation represents that there are two changes i.e. the one is rise and the other are reduce but the both are non-related
hence, the correct option is c.
And, the rest of the options are wrong