Final answer:
Zoser's mortuary complex is historically significant for its innovative features including massive columns, a stepped pyramid, an enclosed courtyard, and elaborate wall carvings, setting architectural and burial precedents. option(D)
Step-by-step explanation:
The innovative features of Zoser's mortuary complex, such as the use of massive columns, the creation of a stepped pyramid form, an enclosed courtyard, and the presence of elaborate wall carvings, represent significant advancements in ancient Egyptian architecture and burial practices.
The complex's design signified a departure from traditional mastaba tombs and served as a predecessor for the later smooth-sided pyramids. The stepped pyramid form, in particular, is one of the most visually striking and historically significant aspects, as it marked the first time such a structure had been built, revolutionizing the dynamics of royal burial sites and setting a precedent for centuries to come.