Explanation:

- The first technology meet under the Hydrocarbon Vision 2030 for Northeast India took place in August 2016.

- Option 1: Itanagar - Capital of Arunachal Pradesh, but not the location of the meeting.

- Option 2: Guwahati - The largest city in Assam and a major hub in Northeast India.

- Option 3: Dispur - The capital of Assam, but less commonly used for large conferences compared to Guwahati.

- Option 4: Imphal - The capital of Manipur, another Northeastern state.

- Option 5: New Delhi - The capital of India, often used for national events but not this specific regional meet.