It's not a person, never heard of a place called 'happiness', or I would go there.
It has to be a thing. Meaning it's a noun.
Answer:
Yes, the term, 'their immediate concern was to save Lucas from the jaws of death' would be figurative speech because Lucas is <em>not</em> actually going to die by getting eaten. It is a metaphor.
Please paraphrase just in case.
Hope this helps!
2.Causes the main conflict
Fallacy: A mistake in reasoning