Answer:
You have the right to a fair trial and the 6th amendment gives you the right to a defendent.
Explanation:
Before the 6th amendment fair trials wern't really possible because if you were wrongly accusd it was extremly difficult if not impossible to be proved innocent because you weren't allowed a lawyer to fight for you. Nowadays you are allowed a criminal defendent that makes sure you have your rights and you are not wrongly accused.
My best guess at the correct answer is D. This is because studying and experience is always better than having nothing.