Yes , you are right in choosing as a option "A" because
as per the Option B , Option C , and the Option D ,these water harvesting concept yet not there in Madhya pradesh by leaving the Option A "Bundhis". Ponds are located in the Jammu region , Bandharas are located in Maharashtra , and Nadis in Rajasthan. Bundhis is the very old water harvesting concept in Madhya Pradesh as by leaving the options b,c and d.

Bundhis are the age-old concept of water harvesting systems in Madhya Pradesh. These structures have been used for centuries to capture and store rainwater, helping to replenish groundwater and meet the water needs of the local communities.

What are Bundhis?
Bundhis are small earthen dams or embankments constructed across streams or rivers to impound water during the monsoon season. These structures are designed to slow down the flow of water, allowing it to percolate into the ground and recharge the aquifers. Bundhis are typically made by digging trenches and piling up the excavated soil to create a barrier across the watercourse.

How do Bundhis work?
When it rains, the water flowing in the stream or river is obstructed by the bundhi, causing it to accumulate behind the dam. As the water level rises, it spreads over the adjacent low-lying areas, creating small reservoirs or ponds. The stored water gradually infiltrates into the soil, replenishing the groundwater table. This process helps to recharge wells, borewells, and other water sources in the vicinity.

Benefits of Bundhis
1. Groundwater Recharge: Bundhis facilitate the infiltration of rainwater into the ground, replenishing the depleting groundwater table. This ensures a sustainable supply of water for irrigation, drinking, and other purposes.
2. Water Conservation: By storing excess rainwater, bundhis help in conserving water during the monsoon season, which can be utilized during dry spells or droughts.
3. Increased Crop Yield: The availability of groundwater due to bundhis allows farmers to irrigate their fields during the dry season, leading to increased agricultural productivity.
4. Prevention of Soil Erosion: Bundhis reduce the velocity of water flow, preventing soil erosion and retaining fertile topsoil on agricultural lands.
5. Livestock Watering: Bundhis provide a source of water for livestock, ensuring their well-being and enabling communities to sustain their livelihoods.

Conclusion
Bundhis have been a traditional and effective method of water harvesting in Madhya Pradesh. These structures play a crucial role in groundwater recharge, water conservation, and supporting agricultural activities. By harnessing the power of rainwater, bundhis have helped communities in the state to combat the challenges of water scarcity and ensure the sustainable use of water resources.