What Is the Best Way to Start When Beginning an Intervention

What is the best way to start when beginning an intervention to optimize a child's development?

A) Determine what goals to achieve and work toward those goals.
B) Identify what is normal and determine why changes occur before trying to optimize development.
C) Set goals and develop a system of rewards and punishments.
D) Locate children who have developed optimally, so information can be compiled about their experiences.