BOD stands for

Explanation: BOD is a biological method that is used to determine the amount of oxygen that is dissolved in the given water sample.

BOD is defined as the amount of dissolved oxygen that is required by bio organisms like aerobic microorganisms or bacterias to perform oxidation of organic matter to break them into simpler molecules. Since BOD method defines the amount of oxygen required for biological purposes, the acronym BOD stands for Biological Oxygen Demand.

Final Answer: The correct answer is option B: Biological Oxygen Demand.