Final answer:
D. Encaustic painting is a form of experimental artistic media known for its use of beeswax mixed with pigments, used since ancient times and innovatively by artists like Jasper Johns.
Step-by-step explanation:
The question asks which of the following is a form of experimental artistic media. Considering the options provided and the historical context and use of different media, we can determine that encaustic painting is a form of experimental artistic media. Encaustic painting is a technique that mixes dry pigment with a heated beeswax binder that is then applied to a support surface. It's an ancient method dating back to at least the first century C.E., known for its durability and vibrant colors. Notably, twentieth-century American artist Jasper Johns used encaustic techniques in an innovative way, adding a layer of irony and commentary on Abstract Expressionism by mimicking brushwork with the wax medium.