The American Baptist Missionaries played a key role in the development of:

Assamese printing press
Literary magazines
Satirical journals
Political newspapers

The correct answer is: a) Assamese printing press.

The American Baptist Missionaries played a key role in the development of the Assamese printing press. In 1836, they established the first printing press in Assam, which was used to print religious texts and other materials in the Assamese language. This helped to promote literacy and education in Assam, and also played a role in the development of Assamese literature.

The other options are incorrect because:

  • b) Literary magazines: The American Baptist Missionaries did not play a key role in the development of literary magazines in Assam.
  • c) Satirical journals: The American Baptist Missionaries did not play a key role in the development of satirical journals in Assam.
  • d) Political newspapers: The American Baptist Missionaries did not play a key role in the development of political newspapers in Assam.