Explanation:

The Indian Space Research Organisation (ISRO) will launch Amazonia-1 satellite of Brazil and 18 Co-passenger satellites through PSLVC51 rocket from the Sathish Dhawan Space Centre at Sriharikota on February 28, 2021.

• PSLV-C51, which is the 53rd mission of PSLV, will launch Amazonia-1 of Brazil as primary satellite and 18 Co-passenger satellites from Satish Dhawan Space Centre (SDSC) SHAR, Sriharikota.
• PSLV-C51/Amazonia-1 is the first dedicated commercial mission of NewSpace India Limited (NSIL), a Government of India company under Department of Space. NSIL is undertaking this mission under a commercial arrangement with Spaceflight Inc. USA.
• Amazonia-1 is the optical earth observation satellite of National Institute for Space Research (INPE).
• This satellite would further strengthen the existing structure by providing remote sensing data to users for monitoring deforestation in the Amazon region and analysis of diversified agriculture across the Brazilian territory.
• The 18 co-passenger satellites include four from IN-SPACe (three UNITYsats from consortium of three Indian academic institutes and One Satish Dhawan Sat from Space Kidz India) and 14 from NSIL.

Hence option 2nd is correct.