Final answer:
The Indus Valley civilization is recognized for its city planning, standardized bricks, and advanced water systems, but the script of its language remains untranslated, making it the feature not associated with this ancient civilization. Option c is correct.
Step-by-step explanation:
The feature that is NOT associated with the ancient cities of the Indus Valley is c) Language that could be translated. The Indus Valley civilization is known for its impressive city planning, standardized oven-baked bricks, and sophisticated indoor plumbing systems.
However, the script used by the inhabitants of the Indus Valley still remains untranslated, making the language they used one of the few aspects not understood about this civilization.
Some of the most well-known cities, such as Harappa and Mohenjo-Daro, show evidence of sophisticated knowledge of water engineering, including citywide drainage systems and indoor toilets that connected to these networks.
Moreover, these cities had well-organized streets laid out at right angles and homes made out of mud bricks of a standard size, indicative of their advanced urban planning.
Trade was significant in the Indus Valley, as evidenced by goods found that suggest extensive trade with cultures such as Mesopotamia and Egypt. Their society included specialized labor, including artisans who created jewelry and fabrics, underpinning a rich cultural and economic life that significantly influenced later Indian civilizations.