Step 1: Background. The Indian Newspaper Society (INS) is an apex body representing the print media industry in India. Step 2: Appointment. K.N. Tilak Kumar was elected as the President of the Indian Newspaper Society. Step 3: Eliminate wrong options.
- AIIMS → Health institution.
- NCERT → Education body.
- NCSC → Commission for Scheduled Castes. Step 4: Conclude. Thus, the correct answer is Indian Newspaper Society.
\[
\boxed{\text{Indian Newspaper Society}}
\]