"I answer that law is a dictate of practical reason, as I have said before. But there are similar processes of
practical and theoretical reason, since both proceed from principles to conclusions, as I have maintained before.
Therefore, we should say that we advance in reason from indemonstrable first principles, naturally known, to
the conclusions of different sciences, conclusions not implanted in us by nature but discovered by exercising reason. Just so, human reason needs to advance from the precepts of natural law, as general and indemonstrable first principles, to matters that are to be more particularly regulated. And we call such regulations devised by human reason human laws, provided that the other conditions belonging to the nature of law are observed, as I have said before. And so also Cicero says in his Rhetoric: ""Human law originally sprang from nature. Then things became customs because of their rational benefit. Then fear and reverence for law validated things that both sprang from nature and were approved by custom."""

How does the text characterize the relationship between law and reason?
a) Law and reason are unrelated
b) Law is independent of reason
c) Law is derived from reason
d) Law is a dictate of practical reason