What was the primary structural function of arches in arcuate style architecture? A) To beautify the superstructure. B) To give shape to the superstructure. C) To carry and distribute the weight of the superstructure. Choose the correct option:

Arrange the following structural components of Sher Shah Suri's tomb at Sasaram in the correct vertical sequence, starting from the base and moving upwards: I. The sphere (dome) II. The main building comprising an octagonal chamber surrounded by an arcade III. The stepped square plinth on a terrace Choose the correct answer from the options given below:

Which of the following monuments was constructed and expanded in stages by Qutb-ud-din Aibak, Iltutmish, and Alauddin Khalji?