Read each sentence to find out whether there is any grammatical or idiomatic error in it. The error, if any, will be in one part of the sentence. The, number of that part is the answer. If there is no error the answer is (e). (Ignore the errors of punctuation, if any)
Q. The children were (a)/ playing with a ball (b)/ and run around when (c)/ the acceident occured(e) /No error (e)
Correct answer is option 'D'. Can you explain this answer?