Please help me find the error in the follwing sentence-
"The treatment of the injury, stoppage of blood flow, sealing the wound and prevention of infection."
This is a parallelism error.
This isn't a sentence; there is no main verb.
However, I think you're asking what the parallelism error is in using 'stoppage' (a noun), 'sealing' (a present participle), and 'prevention' (a noun).
Is that right?