He reform impulse that swept through America in the first half of the nineteenth century sought improvements in all of the following areas except public education. prisons. working conditions. treatment of the mentally ill. slavery.

Slavery

Explanation:

Humanitarian reforms sweet through America some of which incudes

A. Funding of asylums for some deviants as well as those who were mentally ill.

B. There was serious prison reformation to the extent that prisons became penitentiaries, in fact Kentucky in 1821 stopped imprisonment as punishment for debt.

C. There was reformation in education and many other social reforms in fact during this period American had the highest literacy level in the whole world.

Working conditions

Explanation:

Among the various options given, the reforms in US in Nineteenth century brought racical changes in many aspects except that in working conditions of the workers.

This period of reforms in also called as the Second Awakening period in US history. These reform movements focussed on bringing betterment in American society, by the abolition of slavery, educational  reforms, prison reform, women's rights, alcohol reforms, treatment of metally ill and handicapped people and the prisoners in jail.

im going to go with b.