Miranda’s conviction was overturned by the because his constitutional right to a was violated.
a. district court . . fair trial
b. state supreme court . . attorney
c. intermediate supreme court . . fair trial
d. united states supreme court . . fair trial

United States Supreme Court . . . fair trial

Explanation:

Option D best fits the gap because of the following reasons;

1. The United States Supreme Court is the highest court in the federal judiciary of the United States of America

2. The Supreme Court functions as a last resort tribunal.

3. It also decides on cases dealing with the interpretation of the constitution

4. The rulings of the supreme cannot be appealed.

5. The supreme court can overturn a law passed by Congress if it deems it unconstitutional

6. A trial which is observed by trial judge without being partial is a fair trial

Because of the above reasons, option D becomes the best option among the list of options.

The full statement becomes

Miranda’s conviction was overturned by the United States Supreme Court because his Constitutional right to a fair trial was violated.