At what times should medications be administered "ac"?

The term "ac" stands for "ante cibum," which is Latin for "before meals." In a medical context, this typically means that medications should be administered on an empty stomach, usually 30 minutes to an hour before meals.

In the context of the provided times, the correct choice includes administration at 0730, 1130, and 1630. These times correspond closely to typical meal times, with the medications given prior to breakfast, lunch, and dinner, respectively. This pattern effectively allows the medications to be taken when the stomach is empty, which is essential for optimal absorption and effectiveness of many oral medications.

The other options do not align as directly with standard meal times or the practice of giving medications before meals. Recognizing the significance of administering medications at appropriate intervals relative to meals is crucial for ensuring their intended therapeutic effects and maintaining patient safety.