Final answer:
The abbreviation indicating every other day is an option (B) QOD, which stands for "Quaque Altera Die". The other options represent different dosing schedules.
Step-by-step explanation:
The abbreviation that indicates every other day is option (B) QOD. The letters QOD stand for "Quaque Altera Die", which is Latin for every other day. It is commonly used in medical prescriptions. Other abbreviations listed have different meanings; (A) QID stands for "quater in die" which means four times a day, (C) BID stands for "bis in die" which means twice a day, and (D) OD stands for "omni die" which means every day.