Final answer:
The statement is true; Mohenjo-Daro was one of the largest urban centers in the Indus River Valley during the Harappan Civilization, matching Harappa in size and sophistication.
Step-by-step explanation:
The statement that the urban center of Mohenjo-Daro was the largest in the Indus River Valley during the Harappan Civilization is true. Mohenjo-Daro, together with Harappa, emerged as one of the two largest cities of the Indus Valley civilization, and by the time the civilization was at its peak around 2000 BCE, each of these cities possibly had populations of around thirty thousand people. Both cities displayed a high level of urban planning with a sophisticated grid of streets, advanced drainage systems, and similar structural organizations, suggestive of some form of central authority or coordinated political structure.
The Harappan civilization, also known as the Indus Valley Civilization, was known for its technologically advanced cities, Harappa and Mohenjo-Daro, and was notable for its urban planning, water management systems, and use of mathematics in developing a system of weights and measures. Despite the absence of evidence for a hereditary monarchy, the civilization demonstrated a high degree of labor specialization and the ability to manage complex urban centers and irrigated agriculture.