Explanation:

Let’s break this down statement by statement:

- All INSAT satellites launched abroad: Not true. Some INSAT satellites were launched by foreign rockets, but not all. Later ones, like INSAT-3C, were launched abroad, but earlier attempts used Indian launchers where possible.

- PSLVs used for IRS-series satellites: Spot on. The Polar Satellite Launch Vehicle (PSLV) has primarily and successfully launched IRS satellites.

- Indigenously built cryogenic engines used for third stage of GSLV for the first time: Mostly true but with a caveat. First few GSLVs used Russian cryogenic stages. India’s own cryogenic upper stage was first used in 2010 (GSLV-D3, but the launch failed), the first successful one came in 2014.

- GSAT, launched in 2001, demonstrated digital broadcast & internet: Correct, GSAT-1/GSAT-3 missions included payloads for digital broadcasting and internet.

Option break down:

- Option 1 (1,2,3,4): Incorrect, since 1 is not true.

- Option 2 (2,3,4): The best fit.

- Option 3 (1,2,4): Includes 1, which is incorrect.

- Option 4 (1,3): Same problem—1 is not true.

So here’s the thing:

Option 2 (2, 3 and 4) is correct.

If you want to lock in the right answer, go with Option 2. The only tricky part is statement 3—India did eventually use its own cryogenic stage in GSLV, just not for the very first launches. Everything else lines up.