Final answer:
The subject of the question is Architecture. Lord Burlington and William Kent were architects who worked together on Chiswick House, which is an example of Neoclassical architecture.
Step-by-step explanation:
The subject of the question is Architecture. Lord Burlington and William Kent were architects who worked together on Chiswick House, which was begun in 1725. Lord Burlington, also known as Richard Boyle, 3rd Earl of Burlington, lived from 1694 to 1753. William Kent lived from 1685 to 1748.
Chiswick House is an example of Neoclassical architecture, which is characterized by classical architectural elements and principles. The house was designed in this style, which drew inspiration from the ancient Roman and Greek architecture.
Therefore, the correct answer is D. All of these, as all the options mentioned in the question are relevant to Lord Burlington, William Kent, and Chiswick House.