Unlike the buildings in mesopotamian cities, which were arranged haphazardly, the same basic plan was followed for all cities of the indus valley: with houses laid out on a north-south, east-west grid, and houses and walls were built of standard-size bricks.
(a) the buildings in mesopotamian cities, which were arranged haphazardly, the same basic plan was followed for all cities of the indus valley: with houses
(b) the buildings in mesopotamian cities, which were haphazard in arrangement, the same basic plan was used in all cities of the indus valley: houses were
(c) the arrangement of buildings in mesopotamian cities, which were haphazard, the cities of the indus valley all followed the same basic plan: houses
(d) mesopotamian cities, in which buildings were arranged haphazardly, the cities of the indus valley all followed the same basic plan: houses were
(e) mesopotamian cities, which had buildings that were arranged haphazardly, the same basic plan was used for all cities in the indus valley: houses that were