The interaction between a child's biological makeup and the environmental influences that affect his or her development and behavior is called the 

A. ecological systems theory. 
B. body in the classroom analysis. 
C. balanced systems approach. 
D. me/them dynamic. 

C.

To find the answer to this multiple-choice question, you can break down the options and determine which one matches the given description. Let's examine each option:

A. Ecological systems theory: This theory was proposed by Urie Bronfenbrenner and explains how a child's development is influenced by various systems within their environment. While it is related to the topic, it does not directly match the provided description.

B. Body in the classroom analysis: This is not a commonly known term in the field of child development and does not align with the given description.

C. Balanced systems approach: This could potentially be the answer, but let's examine the remaining option to be sure.

D. Me/them dynamic: This phrase does not relate to the description provided and is not a recognized term in child development.

Comparing the options, it is evident that the correct answer is C. balanced systems approach. This term refers to the interaction and balance between a child's biological makeup and the environmental influences that affect their development and behavior.