Final answer:
The unique feature of Djoser's mortuary complex is the step pyramid, designed by Imhotep. This structure was the earliest large stone building in Egypt and a precursor to smooth-sided pyramids seen in later periods.The correct answer is option A.
Step-by-step explanation:
The unique feature of Djoser's mortuary complex is a. Step pyramid. The Pyramid of Djoser, also known as the step pyramid, represents a significant innovation in Egyptian tomb architecture.
The step pyramid was designed by the architect Imhotep and is considered to be the earliest large stone building in Egypt. It started as a stone mastaba but was eventually built into a six-tiered structure, representing the cumulative mastabas, which served as a prototype for future pyramids in ancient Egypt.
Imhotep, renowned as the first named architect in history, created a complex around the step pyramid that included temples, and the design communicated the king's divine-like status.
Unlike the simple mastaba, the step pyramid's grandiose design and the use of durable stone material were groundbreaking for its time and set the stage for future monumental Egyptian architecture, such as the familiar smooth-sided pyramids that followed during the reigns of Djoser's successors like Snefru and Khufu.The correct answer is option A.