Question

which of these scenarios signals a shift in perspective?
a story is told by only one narrator who is a character in the story.
a story moves from one characters viewpoint to another characters.
a story includes several characters who all affect how the plot unfolds.

Explanation:

A shift in perspective in storytelling means changing the character whose viewpoint the story is told from. The first option is a consistent first-person perspective, no shift. The third option has multiple characters influencing the plot but no change in the narrative viewpoint. Only moving between different characters' viewpoints counts as a perspective shift.

Answer:

A story moves from one character's viewpoint to another character's.