The correct answer is option 3, the Civil Disobedience Movement.

To understand why this is the correct answer, let`s look at each option:

Option 1: Swadeshi Movement

The Swadeshi Movement was a movement against the partition of Bengal in 1905. It aimed at boycotting British goods and promoting Indian products. The movement did not start from Dandi, so this option is incorrect.

Option 2: Non-cooperation Movement

The Non-cooperation Movement was initiated by Mahatma Gandhi in 1920. It aimed at boycotting British institutions and promoting the use of Indian goods. This movement also did not start from Dandi, so this option is incorrect.

Option 3: Civil Disobedience Movement

The Civil Disobedience Movement was initiated by Mahatma Gandhi in 1930 as a response to the Salt Law imposed by the British government. The movement started from Dandi, where Gandhi along with his followers marched to the ocean to make salt, defying the British monopoly. This option is correct.

Option 4: Quit India Movement

The Quit India Movement was launched by Mahatma Gandhi in 1942 with the aim of demanding an end to British rule in India.