I have this sentence from one of my IELTS books:
One of the reasons scientists think that there is a link between stress and cancer is the idea that there may be a cancer-prone personality
At first, I think that the main subject of this sentence is "one of the reasons", the verb is "is", and the object is "the idea". But after a while, I think this sentence can be rewritten like this:
Scientists think one of the reasons that there is a link between stress and cancer is the idea that there may be a cancer-prone personality
which makes me think the real main subject is "scientists", and the main verb is "think"
So I have 2 questions here:
What is the main subject and main verb in this sentence?
If the original sentence is "scientists think one of the reasons...", then what mechanism allow us to move object "one of the reasons" before the subject "scientists"?