The correct answer is C) Severe.
Jared is 35 years old, but his mental abilities have never gone beyond that of a second-grader. The level of developmental delay that Jared would be classified is "Severe."
When we are talking about the clinical term of developmental delay, this means that children have not developed a series of skills or abilities that are expected by other children of their age.
The areas in which the delay can be shown are in the language, speech, play activities, and cognitive elements.
The frequent causes for this delay could be hereditary problems, some kind of traumatic experiences, or metabolic disorders.
In the case of Jared, by the conditions mentioned, we are talking about a severe level of developmental delay.