Answer:
d. FERPA prevents the school from providing the data because the researcher does not have prior consent of the parents
Explanation:
The full form of FERPA is "Family Educational Rights and Privacy Act".
       It is United States federal law which protects the rights of the students and governs the gain of educational information and records. They provide protection to the privacy of the students educational records. Parents have the access to the children's information and details.
      Thus when the researcher wished to conduct a study on the students with special needs in a local school, the school did not provide any records of the students because of FERPA act. FERPA prevents the school from providing the data
Thus then answer is
d. FERPA prevents the school from providing the data because the researcher does not have prior consent of the parents.