The Indian national movement advocated for universal adult suffrage for these reasons:

1. Democratic Principles: Aimed to establish a representative democracy, granting every adult the right to participate in governance.

2. Inclusivity: Ensured equality by allowing all adults, regardless of background, to have a say in the country’s future.

3. Social Justice: Addressed historical discrimination by providing marginalized sections with voting rights.

4. National Unity: Fostering unity among diverse communities by giving them a stake in the nation’s progress.

5. Citizen Empowerment: Empowered individuals to actively engage in the nation’s development and decision-making process.