Multiple choice Which of these descriptions of the Indus Valley Cities is correct? Their buildings were made with sod and grass none of them had walls or fortifications they were built with similar street layouts all of them were important Reveal answer Fill a bubble to check yourself C Correct answer Explanation Indus Valley cities, such as Harappa and Mohenjo-Daro, are famous for their advanced urban planning. They featured standardized brick sizes and highly organized, grid-like street layouts.