I think that the answers are A., C., E.,
The National Association for the Education of Young Children (NAEYC) is a large nonprofit association in the United States representing early childhood education teachers, para-educators, center directors, trainers, college educators, families of young children, policy makers, and advocates.[2] NAEYC is focused on improving the well-being of young children, with particular emphasis on the quality of educational and developmental services for children from birth through age 8.
The correct answer is the Pendleton act. It was an act that was passed to turn the government into a merit system. Before that people would gain positions and power based on their political affiliation, not based on their merit, and the pendleton act changed that.