Which of the following applications are built on top of open-source digital platforms?

1.PHP

2.WinRAR

3.DigiLocker

A1 & 2 only

B1 & 3 only ✓ Correct

C2 & 3 only

D1, 2 & 3

Correct answer: (B) 1 & 3 only

Explanation

Statement 1, PHP, is an open-source server-side scripting language freely available to all.

Statement 3, DigiLocker, is built on open-source components as part of India's digital public infrastructure.

Statement 2, WinRAR, is proprietary paid software, not open-source.

Open-source software publishes its source code for free use and modification.

PHP powers a large share of dynamic websites and web applications.

DigiLocker lets citizens store and share official documents digitally.

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