Which of the following is a current use of supercritical fluids?

Supercritical fluids, particularly supercritical carbon dioxide, have a range of practical applications due to their unique properties. These fluids possess both gas-like and liquid-like characteristics, allowing them to effectively solubilize compounds while maintaining high diffusivity.

The extraction of flavors is a common use of supercritical fluids, where they can selectively extract essential oils and flavor compounds from plant materials without the use of harsh solvents. This method retains the quality and integrity of the flavors, making it ideal for the food industry.

In the decaffeination of coffee, supercritical carbon dioxide is utilized to selectively remove caffeine while preserving the flavor and aroma of the coffee beans. This process is favored over traditional chemical methods, as it results in a cleaner product and is more environmentally friendly.

Environmental remediation benefits from the ability of supercritical fluids to solvate pollutants efficiently. They can penetrate contaminated soils and sediments, effectively mobilizing and extracting harmful substances, which aids in cleaning up environmental hazards.

Considering these diverse applications, it is clear why all these options represent accurate uses of supercritical fluids, leading to the conclusion that the best answer encompasses all of the cited choices.