Explanation:

- The Arid Forest Research Institute (AFRI) is one of the reputed research institutes of the Indian Council of Forestry Research and Education.

- It is crucial for conducting research on forestry and ecology in arid regions.

- Option 1: Jodhpur

- Correct Answer: The Arid Forest Research Institute is indeed located in Jodhpur, Rajasthan.

- Jodhpur's arid climate makes it an ideal location for AFRI’s research focus.

- Option 2: Jaipur

- Jaipur is the capital of Rajasthan but does not host the AFRI.

- Option 3: Ahmedabad

- Ahmedabad is in Gujarat and not linked with AFRI.

- Option 4: Dehradun

- Dehradun is known for the Forest Research Institute but not AFRI.