48. Sentence (5) : "Only children" also enjoy the advantage of having parents where, without the distraction of other children, are able to devote more time to him, talk to him, and stimulate him in intellectual activities. What correction should be made to this sentence? (A) Change where to who. (B) Change the distraction to a distraction. (C) Change of having to to have. (D) Insert to before stimulate.