Setting is a crucial part of characterization and development of a character. Setting shows what social class the character might be in, living conditions, how they dress etc. and all of these traits are part of characterization.
<span>Orphans give Indian couple will to live </span>the orphaned children help them more than they help children
So it's A, the right answer
<span>I'd say prepositional phrase because on is a preposition.</span>
All of the words make sense together.