Final answer:
The statement is False because individual growth and development rates vary due to genetic factors and environmental conditions, resulting in differences in the timing of developmental milestones and physical attributes.
Step-by-step explanation:
The statement that all people progress through the stages of growth and development at the same rate is False. Growth and development are influenced by a combination of genetic factors and environmental conditions, which can cause individuals to experience these stages at different rates. For example, when it comes to language development, although children worldwide follow a similar sequence in reaching language milestones, cultural variances in child care practices can either accelerate or inhibit the timing at which milestones such as sitting, crawling, and walking are reached. Similarly, during adolescence, the rate of growth spurts and physical changes varies significantly among individuals. It is also important to mention that individual differences in genetics can lead to variations in physical attributes such as the proportion of slow-twitch to fast-twitch muscle fibers, which are not the same for everyone.