Explanation:

• IRNSS-1A is the first navigational satellite in the Indian Regional Navigation Satellite System series of satellites.

The other four satellites mentioned are all earth observation satellites.

• Megha-Tropiques is an Indo-French Joint Satellite Mission for studying the water cycle and energy exchanges in the tropics.
• The Satellite with ARGOS and ALTIKA (SARAL) is a joint Indo-French satellite mission for oceanographic studies.
• Oceansat-1 or IRS-P4 was the first Indian satellite built primarily for ocean applications. It was a part of the Indian Remote Sensing Programme satellite series.
• Bhaskara-I was India’s first low orbit Earth Observation Satellite.

Hence option 3rd is correct.