Bronfenbrenner's bioecological theory is described as

A) Russian Dolls nested inside each other with the child at the core
B) A theoretical framework to improve kindergarten readiness
C) The biology of developmental theory
D) A model theory of ecology

Bronfenbrenner's bioecological theory is often described as a set of nested systems, with the child at the center, surrounded by various eco-systems that influence their development. This is often compared to Russian dolls, where each layer surrounds and is influenced by the layer inside it. Option B is incorrect as the theory does not specifically focus on kindergarten readiness. Option C is incorrect as the theory is not specifically focused on biology. Option D is incorrect as the theory is not a model theory of ecology, but rather a bioecological theory of development.