Which of the following can cause a developmental disability?

• A. Exposure to positive social environments
• B. Genetic abnormalities such as Down syndrome
• C. Regular physical exercise during childhood
• D. Consistently high academic achievement

Answer: (B)

Verified step by step guidance

1. Understand what a developmental disability is: it refers to a group of conditions due to an impairment in physical, learning, language, or behavior areas that begin during the developmental period, often before birth or in early childhood.
2. Review each option and consider whether it is known to cause developmental disabilities. For example, exposure to positive social environments generally supports healthy development rather than causing disabilities.
3. Recognize that genetic abnormalities, such as Down syndrome, are well-established causes of developmental disabilities because they involve changes in chromosomes that affect development.
4. Consider that regular physical exercise during childhood is beneficial for development and does not cause developmental disabilities.
5. Note that consistently high academic achievement is a positive outcome and not a cause of developmental disabilities.