A patient receiving a blood transfusion develops chills, rigors, dyspnea, and hypotension. What is the most appropriate immediate management?

Correct option is C

In suspected transfusion reaction (especially anaphylaxis or severe febrile reaction), the transfusion must be stopped immediately and managed with IV steroids ± antihistamines.
Explanation of options: (a) ✘ Slowing transfusion is unsafe; must be stopped. (b) ✘ Continuing increases reaction risk; wrong. (c) ✔ Correct; stop transfusion + steroids/antihistamine is standard. (d) ✘ Switching bags risks recurrence if reaction not clarified.