Explanations:The Chahamana dynasty, also known as the Chauhans, was a significant Rajput dynasty that ruled parts of northern India during the medieval period. The Chahamanas were known for their control over regions including Delhi and Ajmer, which were important centers of power and culture during their reign.
The Chahamanas emerged as a powerful dynasty in the 8th century and continued to rule until the 12th century. They were known for their military prowess and their ability to expand their territory. The Chahamanas were particularly influential in the region of Rajasthan and parts of what is now Uttar Pradesh and Madhya Pradesh.
Delhi and Ajmer were two of the most important cities under Chahamana control. Ajmer, in particular, was the capital of the Chahamana kingdom and a significant center of culture and learning. The Chahamanas built several important structures in Ajmer, including the Ajmer Sharif Dargah, which remains a significant religious site to this day.
Delhi, on the other hand, was a strategic location that the Chahamanas controlled for a significant period. The city's importance as a center of power and trade made it a valuable asset for the Chahamanas. The Chahamanas were succeeded by other dynasties, including the Delhi Sultanate, which further expanded the city's significance.
It is important to note that the Chahamanas did not rule over Agra and Hyderabad, which were under the control of other dynasties. Agra was primarily under the control of the Delhi Sultanate and later the Mughals, while Hyderabad was part of the Deccan region and was controlled by various dynasties, including the Kakatiyas and the Qutb Shahis.
Therefore, the correct answer is that the Chahamanas ruled over Delhi and Ajmer, making option B the correct choice.