A person cannot become Autistic, a person is born Autistic. Not speaking does not mean that a person has become Autistic, there are many reasons why a neurotypical person may stop speaking.
A person is born autistic - they do not become autistic.
A person doesn't become autistic and being quiet doesn't make someone autistic - a person is born autistic.
A person is born autistic - no one knows the cause of autism.
Someone who is born on the autism spectrum/has autism spectrum disorder/is autistic. Often used in an offensive manner towards autistic people.
No, autistic people do not have a shorter lifespan. There is nothing about autism that would cause someone to have a shorter lifespan.
No, no more than you can be half autistic
Someone who is autistic but with a special talent or ability.
Verbal communication is when you are physically speaking to someone about something. Nonverbal communication is when your words are spoken through your body language.
touching your own body or someone else
Yes.
Absolutely!
Yes, Autistic people can 'make' a child just like anyone else.Autism is a neurological variation, it doesn't prevent someone from reproducing just like a person of any other neurology. Autistic people are more likely to have Autistic offspring, especially if both mother and father are Autistic, but can also have children of different neurologies.