Meaning of physical growth cycle is:

The physical growth cycle refers to the natural process of human growth and development, which occurs in different stages throughout life. Growth is influenced by genetic, environmental, and nutritional factors. It does not happen at a constant rate but follows distinct periods and phases, including infancy, childhood, adolescence, and adulthood. 

Key Points

•  Physical growth occurs in periods and phases, follows a regular rate at times, and has rapid growth phases at certain stages.
• During infancy and adolescence, growth happens at a rapid rate, while childhood and adulthood exhibit a more regular and steady rate.
• Growth occurs in different periods and phases, such as prenatal development, infancy, and puberty, where specific physical and biological changes take place.
• These variations in growth patterns highlight the dynamic nature of human development, proving that growth does not follow a single pattern but incorporates all these aspects.

Hence, the correct answer is all of the above.