Final answer:
The NAEYC (National Association for the Education of Young Children) option (B) is the world's largest organization of early childhood educators, advocating for children from birth through age 8.
Step-by-step explanation:
The world's largest organization of early childhood educators, dedicated to advocating for the needs and interests of children from birth through age 8, is the NAEYC (National Association for the Education of Young Children) option (B). This organization is a professional association for individuals working in the field of early childhood education. NAEYC promotes high-quality early learning for all children and provides resources, training, and support for educators.