In 1892, the People's Party Convention produced the Populist party. Thus option A is correct.
In 1892 to introduce reforms in the Federal government with the railroads' ownership, along with direct income tax and selection of senators, Populist National Convention started gathering the workers' and farmers' support.
The party under the leadership of James B., Weaver Thomas, and E. Watson formed the People's Party Populist Party. Thus option A is correct.
For more information about the People's Party Convention, refer to the link:
The bureau of Indian Affairs was organized in 1824 as part of the "Department of War," since prior to this organization the military had been the go-to organization for dealing with Indian issues.