The branch of psychology that focuses on physical, mental, and social changes during the life cycle is called:

The branch of psychology that focuses on physical, mental, and social changes during the life cycle is called developmental psychology

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