Which one of the following statements is true about the role of heredity and the environment?

• A. Certain aspects of development are influenced more by heredity and others more by the environment.
• B. A child’s ability to learn and perform is completely decided by the genes.
• C. Good care and a nutritious diet can fight off any disorder a child is born with.
• D. The environment plays a significant role only in the child’s language development.