Direction: Spot the grammatical errors in the given sentence. Mark the part with error as your answer. If there is no error, mark "No error" as the answer. (Ignore punctuation error)

injected into the blood, (a)/ tiny bubbles of gas can ease (b)/ the sage Of vital stroke drugs into the rain, (c)/ helping in prevent damage to the grey matter. (d)/ No error (e)

[BANK OF MAHARASHTRA(PO), 2010]