Option 1: (A) EOS-04 is Earth Observation Satellite (IV), GSAT-29 is a geostationary communication satellite (I), GAGAN is GPS Aided GEO Augmented Navigation system (III), and INS-1A is an experimental nanosatellite (II).
Option 2: Incorrectly matches GAGAN as experimental and INS-1A as navigation, when it's the opposite.
Option 3: Incorrectly matches EOS-04 as communication and GSAT-29 as earth observation, which are reversed from their actual applications.
Option 4: Combines errors from both options 2 and 3, with multiple incorrect matchings.
Hence, Option 1: (A) - (IV), (B) - (I), (C) - (III), (D) - (II) -> EOS-04 is part of ISRO's Earth Observation Satellite series, GSAT-29 is a high-throughput communication satellite, GAGAN provides satellite-based navigation services for Indian airspace, and INS-1A was ISRO's first nanosatellite carrying experimental payloads -> correct