The correct answer is A) Narmada and Chambal.
Palaeolithic tools have been discovered in the valleys of the Narmada and Chambal rivers in Madhya Pradesh. These tools are made of stone and date back to the Stone Age. They are evidence of the early human habitation of the region.
The Narmada River is the longest river in Madhya Pradesh. It flows from the Amarkantak hills in the south to the Gulf of Khambhat in the Arabian Sea. The Chambal River is a tributary of the Yamuna River. It flows from the Vindhya Range in the south to the Yamuna River in the north.
The discovery of Palaeolithic tools in the valleys of the Narmada and Chambal rivers is significant because it provides evidence of the early human habitation of the region. These tools are also important because they can provide insights into the lives of the early humans who lived in the region.
The other options are incorrect because they do not correspond to the valleys of rivers in Madhya Pradesh where Palaeolithic tools have been discovered.