Identify the correct order of the following statements to make a coherent paragraph. The lead sentence has been given.

Dholavira- the Harappan city - is the first Indus Civilisation site in India that received the World Heritage tag.

A. In fact, the maps suggest that the entire city was shaped like a parallelogram, while smaller compartments were shaped as squares or rectangles.

B. Probably they lead to sections that are still awaiting excavation.

C. Everything has been built in perfect shapes, although the purpose of some of these structures is unclear.

D. There were a few staircases going underground, but the entries are blocked with iron grids.

E. The geometric perfection of the Civilisation is visible throughout these ruins.

The paragraph starts by introducing Dholavira as the first Indus Civilization site in India to receive the World Heritage tag. It then goes on to describe the geometric perfection visible throughout the ruins and the use of perfect shapes for construction, even though the purpose of some structures is unclear. The next sentence describes the city's layout, which was shaped like a parallelogram with smaller compartments in the form of squares or rectangles. The passage then mentions the existence of a few underground staircases, which are blocked with iron grids, possibly leading to sections still awaiting excavation. Therefore, the correct order is ECADB.

We can identify that Statement E must follow the lead sentence since the phrase "these ruins" points towards the Dholavira site, and the broader idea of 'geometric perfection' is first introduced here. The author builds on this subject of geometry by highlighting how "everything has been built in perfect shapes" [Statement C]. This idea is further supplemented using the evidence from the site's map [Statement A], which supports the idea of how the landscape reflected 'geometric' patterns/shapes. Identifying these links should be sufficient to zero in on Option B as the correct choice.