Option 1: Central Archives - It is a part of All India Radio’s Transcription and Programme Exchange Service. This unit is responsible for maintaining and organizing the archives of All India Radio.
Option 2: Sound Archives - It is also a part of All India Radio’s Transcription and Programme Exchange Service. This unit is responsible for storing and preserving the audio recordings of various programs and broadcasts.
Option 3: Advanced Research Unit - This is the correct answer. It is not a part of All India Radio’s Transcription and Programme Exchange Service. The Advanced Research Unit is likely a separate unit within All India Radio that focuses on research and development activities.
Option 4: Transcription Unit - It is a part of All India Radio’s Transcription and Programme Exchange Service. This unit is responsible for transcribing audio recordings into written form and managing the exchange of program recordings with other broadcasting organizations.
In conclusion, the correct answer is option 3, the Advanced Research Unit, as it is not a part of All India Radio’s Transcription and Programme Exchange Service.