Which Describes the Term "Developmentally Appropriate Practice" (DAP)

Which describes the term "developmentally appropriate practice" (DAP) ?

A) A curriculum-based assessment technique for deciding on intervention strategies.
B) A procedural safeguard in IDEA that applies to assessment and identification in early childhood special education.
C) A philosophy and practice guidelines for basing teaching on what is typically expected of and experienced by children of different ages and stages.
D) A philosophy and guidelines promoting the concepts of inclusion and natural learning environments (e.g., home) in early childhood.