Perspective-taking borrows the body's own rotation

Correct: B — The participant's body is rotated toward the same orientation as the imagined viewpoint

Kessler and Thomson (2010) tested level-2 perspective-taking — judging how a scene appears to someone else — under varying body postures. Participants were faster and more accurate when their own body was rotated toward the to-be-imagined viewpoint than when it remained aligned with their actual one. This is evidence for an embodied 'mental rotation of the self', not just a disembodied geometric computation: the motor and proprioceptive systems contribute to imagining how the world looks to another. The result links spatial cognition to the broader literature on embodied simulation.