Final answer:
Rates of development can vary across multiple domains, including temperament, motor skills, academic skills, and language, with none being exempt from variability as children mature into adults.
Step-by-step explanation:
As children and adolescents mature into adults, rates of development can vary in all except which of the following? To answer this question, it's important to consider the domains of development that developmental psychologists study. These typically include physical, cognitive, and psychosocial domains. While temperament is regarded as something that has a biological basis and is present from early life, suggesting it varies less than the other areas, it can still be influenced by environmental factors and maturation. Motor development, academic skills, and language, on the other hand, can show a great deal of variability among individuals. For example, language development tends to follow a universal sequence, but the exact timing can vary based on cultural and environmental differences.
Answering the original question, rates of development as children and adolescents mature into adults can vary in all of the following: temperament, motor development, academic skills, and language. There is no option among a) temperament, b) motor development, c) academic skills, d) language, that is exempt from variability in development rates.