The suggestion that children with intellectual disability demonstrate the same behaviors and underlying processes as typically developing children who are at the same level of cognitive functioning is referred to as the

The idea given above is referred as the similar structure hypothesis. It states that mentally disabled and normal individuals would show the same behaviors and processes given that they are in the same level of cognitive functioning.  Individuals with the same mental age whether they are of normal intelligence or with disability would show no difference in their cognitive processes.

The answer - c apex