In the late 1800s, why might a potential new factory employee refuse to sign a yellow-dog contract? because yellow-dog contracts required an employee and his family to live in a company town
because yellow-dog contracts required employees to report back to employers with any information regarding labor union organization
because signing a yellow-dog contract labeled an employee as a scab and made him or her a potential target of union violence
because promising not to join a union would strip the employee of his ability to protest workplace injustices with the support of an organized workers’ group

Answer is D