This type of reserve can be estimated with reasonable certainty that it can be recoverable under current economic conditions.

• A. Probable Reserves
• B. Possible Reserves
• C. Contingent Resources
• D. Proved Reserves

Answer: (D)

The main idea here is the definition of Proved Reserves. Proved Reserves are the quantities of oil and gas that, based on geological and engineering data, can be estimated with a high degree of confidence to be recoverable from known reservoirs under existing economic conditions and operating methods. The phrase “reasonable certainty” reflects this high level of confidence, and “under current economic conditions” means current prices, costs, technology, and operating plans are all considered when classifying them.

Why this fits best: Proved Reserves are anchored to known reservoirs and to the present economic framework, so they represent what can be recovered with a strong likelihood right now. If prices or technology change, the classification could shift, but under current conditions they are considered recoverable with reasonable certainty.

For context, other categories exist. Probable Reserves have a lower level of confidence than proved, and Possible Reserves have an even lower confidence level. Contingent Resources are promising discoveries that are not yet proven to be economically viable or fully developed under current conditions.