Answer:
The branch of psychology that focuses on physical, mental, and social changes during the life cycle is called developmental psychology
Step-by-step explanation:
Developmental psychology is the study of how people change physically , mentally and socially throughout the lifespan.
At every age and stage of life , developmental psychologists investigate the influence of multiple factors on development , including :
1) Biological
2) Environmental
3) Social
4) Cultural
5) Behavioural factors