Which of the Following Patients Would Be at Greatest Risk

Which of the following patients would be at greatest risk in a healthcare visit ?

A) Clyde requires an anticoagulant. He tells the nurse about his medications. He does not include an herbal supplement.
B) George is very shy and withdrawn. He asks the nurse to leave him alone.
C) Sarah is a new parent who finds that nurses on the children's unit are very helpful. She is eager to accept all suggestions, including those that she does not yet understand.
D) Claude is booked for bowel surgery. His doctor explains about the colostomy. Later, Claude tells his wife that he really doesn't know what the doctor meant by colostomy.