The nurse is preparing to administer a medication.Which of the following is the most critical to assess before medication administration?

A) Diet history
B) Allergy history
C) Surgical history
D) Drug tolerance

Drug allergies should be listed on each page of the medication administration record (MAR),prominently displayed on the patient's medical record,and the patient should be wearing the agency's allergy bracelet.Assessment for drug allergies is necessary before medication is administered.A patient's diet,surgical,and drug histories are important to assess,but they are not as critical as allergy history,which can reveal life-threatening conditions.