Explanation:
- Chippendale's style is famously known for ornate and elaborate decoration, which aligns with the Rococo style-a style marked by intricate, ornamental designs.
- "Rococo" is a recognized historical style strongly associated with lavish, decorative details, which fits the description of embellishing even plain furniture.
- Other options:
- Plebeian means common or low-class, which contradicts the ornate embellishment.
- Cosmopolitan refers to worldly sophistication, less about decorative style.
- Intuitive relates to instinct, not style.
- Austere means simple or severe, opposite of ornate.

Correct answer:
C. rococo