Concept:Child development is the scientific study of growth from conception to adolescence, focusing on biological, psychological, and emotional changes.
Explanation:Child development covers physical, language, thought, and emotional changes from birth to adulthood.
It includes three stages: early childhood, middle childhood, and adolescence.
The primary scope is from conception to adolescence.
While development involves processes and environmental influences, these are not the main defining themes of child development.
Hence, only the third option correctly describes child development.
Answer:Option C – It is the study from conception to adolescence.