The primary reason for the decline of the Harappan Civilisation was:

Class 6 Social Science Chapter 6 The Beginnings of Indian Civilisation highlights the role of language and script in early India. The Indus script remains undeciphered, making it a topic of interest for historians and archaeologists. MCQs in this section often focus on how language evolved, from pictographs in the Harappan civilization to the emergence of Sanskrit in the Vedic period. By answering these questions, students develop an understanding of how communication systems played a crucial role in shaping early societies.
Ans.: (B)
The primary reason for the decline of the Harappan Civilisation was climatic changes and drying of rivers.