Step 1: Context of Tughlaq architecture.
The Tughlaq dynasty (14th century Delhi Sultanate) is known for introducing distinctive architectural features emphasizing strength, simplicity, and durability.
Step 2: Analyzing options.
- (A) Battered walls: Sloping walls, typical of Tughlaq forts, to provide extra strength. Correct.
- (B) Combination of arch, post and lintel: Transitional style blending Islamic arches with earlier Hindu elements. Correct.
- (C) Maximum use of Delhi quartzite: They used locally available hard stone (quartzite). Correct.
- (D) Rubble masonry with lime plaster: Their structures were covered with lime plaster over rubble masonry. Correct.
Step 3: Conclusion.
All four features are important in Tughlaq architecture.