What is ODP?

• A. Ozone Depletion Potential — measure of ozone damage
• B. Oxygen Density Parameter — measure of air quality
• C. Ozone Data Point — data about weather
• D. Ozone Distribution Power — mixing rate

Answer: (A)

ODP stands for Ozone Depletion Potential, a metric used to compare how much different substances can destroy the ozone layer in the stratosphere. It’s defined relative to a reference substance (usually CFC-11) which is assigned an ODP of 1. Substances with lower ODP values have less ozone-destroying capability, while those with higher values have more. This metric helps policymakers decide which chemicals to regulate or phase out to protect the ozone layer.

So why the other terms don’t fit: there isn’t a standard measure called Oxygen Density Parameter for air quality, nor a concept called Ozone Data Point or Ozone Distribution Power in this context. ODP specifically targets the potential to deplete ozone, not general air quality or weather data.