Answer: A-Behavior and development
Step-by-step explanation:
To diagnose a child with autism, we must look at their behavior as well as their history of development. This means observing how they behave and interact with others, as well as assessing their milestones and progress in areas such as communication, social skills, and cognitive abilities.
Behavioral observations are important in diagnosing autism because children with autism often display certain characteristic behaviors, such as repetitive movements, difficulty with social interactions, and unusual sensory responses. These behaviors can provide important clues for diagnosing the condition.
On the other hand, assessing a child's developmental history is also crucial in diagnosing autism. This involves looking at their milestones, such as when they started speaking, walking, and achieving other developmental milestones. It also involves considering their overall progress in various areas of development compared to typically developing children of the same age.
By examining both behavior and developmental history, clinicians can gather valuable information to make an accurate diagnosis of autism. This comprehensive approach helps ensure that all relevant factors are considered and increases the accuracy of the diagnosis.
So, the correct answer is A. Behavior; development.