The correct option is the option D. The Union supporters regarded that Reagan’s firing of striking air-traffic control workers was an assault on organized labor. This situation began when the PATCO ( Professional Air Traffic Controllers Organization ) started a strike on August 3, 1981, they were demanding better working and payment conditions and a 32 hour work-week schedule. Due to this strike being illegal, since they took an oath where they swore they won´t particiate in any strike against the United States, Reagan fired more than 11.000 of the striking workers that refused to return to work after his order to go back to work immediately.