The choice that best supports the student's conclusion is:
(Choice B) Compared with participants who saw the control review, participants who saw the low-anger review rated the review as slightly more helpful, whereas participants who saw the high-anger review rated the review as less helpful.
This choice indicates that while the low-anger review is perceived as more helpful than the control (no anger), the high-anger review is rated as less helpful, supporting the idea that a high degree of anger negatively impacts readers’ perceptions of the review.