What type of flow measuring device would measure totalized flow volume as opposed to an instantaneous flow rate?

Correct Answer: Option C — Positive displacement meter, such as nutating disk

Positive displacement meters, such as nutating disks or rotary vanes, measure flow by capturing discrete volumes of fluid and counting them. This mechanism inherently totalizes the volume passed through the meter, making it the standard choice for fuel oil bunkering or water consumption monitoring where total volume is required.