The proposed Rowlett Act of 1919 allowed detention of political prisoners without trial for __________.

Correct option is A

The proposed Rowlett Act of 1919 allowed the detention of political prisoners without trial for two years.
The Anarchical and Revolutionary Crimes Act of 1919 is popularly known as the Rowlatt Act.
Provisions of the Rowlett Act of 1919:
The purpose of the Act was to curb the growing nationalist upsurge in the country. 
The Rowlett Act allowed the government to arrest and imprison anyone suspected of "revolutionary" or "anarchist" activities without trial for up to two years. It also authorized the government to conduct searches and seizures without a warrant and to detain individuals without charge for up to six months.