Option 1: There is no evidence to suggest that horse sacrifice was known to the Harappan Civilization. This statement is incorrect.

Option 2: The cow was not necessarily considered sacred to the Harappan Civilization. While the presence of cattle is evident in their art and artifacts, it is difficult to determine whether they held the cow as a sacred animal. This statement may or may not be correct.

Option 3: The deity known as ‘Pashupati’ is indeed venerated by the Harappan Civilization. However, it is important to note that this deity is represented in the form of a male figure seated in a yogic posture and surrounded by animals, rather than the deified form of a cow. This statement is partially correct.

Option 4: The Harappan Civilization was characterized by a dynamic culture that changed and evolved over time. Archaeological evidence suggests that there were periods of growth, decline, and shifts in urban planning and architecture. This statement is correct.