Assertion: New technologies and various forms of communication played a vital role in bringing social change in Colonial India.
Reason: The printing press, telegraph, and later the microphone, movement of people and goods through steamship and railways helped quick movement of new ideas.

Both A and R are true and R is the correct explanation of A.

Both A and R are true, and R is the correct explanation of A.

The assertion is supported by the reason that new technologies such as the printing press, telegraph, and later innovations like the microphone, along with improved transportation through steamships and railways, played a crucial role in facilitating the quick movement of new ideas and contributing to social change in Colonial India.