Which of the Following Is True of Autism

Multiple Choice

Which of the following is true of autism?

A) genetics appears to play the predominate role in determining whether someone will be autistic.
B) environmental factors appear to play the predominate role in determining whether someone will be autistic.
C) both genetics and the environment appear to play a role in determining whether someone will be autistic.
D) autism is characterized by small brain size in early childhoold and increased white matter development in adulthood.