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)

The actor, that was (a)/ busy meeting and greeting people (b)/ made sure that this day became (c)/ an extra special one for his parents (d)/ No error (e)

[BANK OF MAHARASHTRA(PO), 2010]