Answer:
Explanation:
Autism spectrum disorder, or better known as ASD, is a neurological and developmental disorder. It affects how a person interacts and acts with other people; how it communicates and learn. There are a range of signs/symptoms for this type of condition, but the most commons are: difficulty with social interaction and communication; such as, making little eye contact, having difficulties following a normal conversation, having trouble understanding the point of view of another person, etc. They also show repetitive behaviors and patterns, such as, repeating words or phrases, having an intense conversation of a certain topic, etc.
His immune system is using the first line of defense. His body is using purging methods that is caused by irritation of the hairs in his nose. This defense system<span> uses physical and chemical barriers that are prepared to defend the body from infection.</span>
The asnwer is D
.............
