Which Assessment Precaution Is Most Important to Teach a Patient

Which assessment precaution is most important to teach a patient who is prescribed pioglitazone (Actos) as his or her only antidiabetic drug?

A) Measure your blood glucose level about 1 hour after you take this drug.
B) Note whether you experience vivid dreams or nightmares.
C) Check your urine daily for a pinkish color.
D) Weigh yourself daily and keep a record.