SAT English Practice Question

The main purpose of the text is to explain how an artistic technique developed over time. The author traces the history of how this technique was first developed and its evolution in the years since. The author focuses on the materials that were used in the past and the materials that are currently used in the art form. What does the text emphasize?

1. A.the process of creating art.
2. B.the history of a particular art form.
3. C.the materials that are used in art.
4. D.the evolution of a particular artistic technique.