Hi, your explanation reads nicely. But as this is a 'show' criteria is it possible you can use records from the setting that will demonstrate your knowledge of how planned activities support different areas or aspects of children's development?
You may find your assessor is expecting to discuss this with you on their next visit?
You can read about holistic development and the interconnected or interdependent nature of development on
page 43 of this EYE book (search inside the preview for the word interdependent) or
page 230 of this CYPW book which helps show the link with the EYFS (search inside for the word interdependency)
Hope this helps xx