Which of these statements expresses one of the reasons the Inca tracked the movements of the planets and the stars? A. The knowl
edge was central to their religion. B. The knowledge helped them perform surgeries. C. The knowledge helped them achieve military conquests. D. The knowledge aided them in architectural engineering.
Answer:the Social Security Act established a system of old-age benefits for workers, benefits for victims of industrial accidents, unemployment insurance, aid for dependent mothers and children, the blind, and the physically handicapped.
