The correct answer is: Chirand.
Chirand is an archaeological site located in the Saran district of Bihar, India. It is one of the most important Neolithic settlements in the region. The site was excavated in the 1960s and 1970s by a team of archaeologists led by B.K. Thapar.
The excavations at Chirand revealed a well-developed Neolithic culture. The people of Chirand lived in mud-brick houses and practiced agriculture. They also domesticated animals, such as cattle, sheep, and goats. The people of Chirand were skilled in pottery and metalworking.
The site of Chirand is a valuable source of information about the Neolithic culture of Bihar. It provides evidence of the early development of agriculture and animal domestication in the region. The site also shows the extent of trade and cultural contact between Bihar and other parts of India.
The other options are incorrect because they are not Neolithic settlements in Bihar. Senuwar is a Chalcolithic settlement, Taradih is an Iron Age settlement, and Koldihwa is a Mesolithic settlement.