What is the primary focus of the research on "Stress, Eating Behavior, and Adverse Health in Parents of Young Children with Autism Spectrum Disorder"?

a) The impact of exercise on stress reduction in parents of children with autism.
b) The relationship between eating behavior and adverse health outcomes in parents of children with autism.
c) Strategies for managing sleep patterns in parents of young children with autism.
d) The role of educational interventions in improving the mental health of parents with autistic children.