Which antebellum social issue was the greatest concern for religious groups such as the quakers and moravians? a) public school reform b) the abolition movement c) the temperance movement d) the women's suffrage movement

The right answer would be b) the Abolition Movement.

After 1776, there were advocates from both the Quaker and Moravian religions helping to persuade slaveholders down south to free their slaves.

This ocurred because Quakers' core beliefs involve equality and peace, and Moravians professed unity among all Christians.  

while it was true that the cotton gin reduced the labor of removing seeds, it did not reduce the need for slaves to grow and pick the cotton.

explanation:

before eli whitney's invention of the cotton gin, picking and cleaning cotton was a slow, labor-intensive job. workers, usually slaves, had to pick the seeds from the cotton fibers by hand. this invention made it possible to grow large amounts of cotton on big farms and make money.