Practical reason is ordered to action, since every efficient cause acts for the sake of an end, which has the nature of
good. And so that good is what all things seek. Therefore the first precept of the natural law is that we should do and
seek good, and shun evil. And all the other precepts of the natural law are based on that precept, namely that all the things that practical reason by nature understands to be human goods or evils belong to precepts of the natural law as
things to be done or shunned.

What is the first precept of the natural law, according to the text?
a) To seek knowledge and wisdom
b) To do and seek good, and shun evil
c) To follow divine laws
d) To live virtuously