I believe the answer is: specific learning disorder.
people with specific learning disorder tend to experience the effect by the time they are 5-6 years old. This is characterized by difficulties in understanding a certain subject on the curriculum and typically lower test score compared to average students. In united states, it is predicted that almost 20% of total students are experiencing this disorder.
Social engineering is the art of manipulating, influencing, or deceiving you in order to gain control over your computer system.
Answer D). U.S. or federal laws