Answer:
D. developed a brotherhood of workers and an exclusive focus upon wages and hours rather than grand, Utopian schemes
Step-by-step explanation:
Knights of Labour was the first labour organisation in US. It was founded in 1869 and Uriah Smith Stephens was its first labour. It began as a secret organisation to protect its members from the employer. This secrecy gave the organisation an emotional response. Its ideology was based on the unity of interest of farmer, shopkeepers and labourers.
It membership was at its peak in 1886 with 700,000 members. But its membership and influence declined after 1886. It campaigned for economic and social change such as abolition of child labour, equal pay for women and men, and abolition of child labour. The KOL allowed unskilled, semi-skilled and skilled workers into the organisation. Women and African Americans were also granted membership.