The scientific, natural explanations. I don't see how discussing their details could be on-topic.
Shraf has asked you twice if you'd like to participate on a topic about the natural, biological causes of emotions. If that's something you suddenly want to talk about I suggest you take her up on her kind offer.
Making up the answer to a question, instead of being guided by the evidence, is never consistent with the scientific method. You should know that Collins's views have been rebutted by a number of other thinkers.