Which of the following statements is true regarding the prevalence of autism spectrum disorder?
a. Vaccines or substances in vaccines are responsible for the increase in autism spectrum disorder diagnoses.
b. The increase in autism cases is likely due to increased awareness and changes in diagnostic criteria.
c. A delayed vaccination schedule is recommended to avoid autism development.
d. Autism spectrum disorder is found predominantly in females.
Question 2
The concordance rate for ASD in monozygotic twins is ___________ whereas the rate for dizygotic twins is ____________.
a. 70; 5
b. 5; 70
c. 25; 75
d. 75; 25