Arrange the parts and spaces of a typical house in the logical order of construction from base to finished room. (i) Windows (ii) Walls (iii) Floor (iv) Foundation (v) Roof (vi) Room (habitable space)

Introduction / Context:
Construction follows a bottom-up dependency chain. The question demands structural logic from substructure to habitable space.

Given Data / Assumptions:

• Foundation provides base.
• Floor slab is laid on the foundation/subgrade.
• Walls are erected upon the floor/beam system.
• Windows are installed in walls.
• Roof caps the structure.
• Room becomes usable after enclosure.

Concept / Approach:
Dependencies: element B cannot exist securely before element A that supports it.

Step-by-Step Solution:
1) (iv) Build foundation.2) (iii) Lay floor/ground slab or primary deck.3) (ii) Raise walls.4) (i) Fit windows into wall openings.5) (v) Install roof.6) (vi) The enclosed space is now a room.

Verification / Alternative check:
Any ordering with roof before walls/windows is infeasible; room cannot precede enclosure.

Why Other Options Are Wrong:
Options placing roof early or windows before walls violate construction dependencies.

Common Pitfalls:
Confusing finishing order with structural sequence; assuming “room” is a component rather than the completed space.

Final Answer:
(iv), (iii), (ii), (i), (v), (vi)