What are the two biological factors that influence human behavior according to the text?

I. The biological factors of human behavior are inheritance and maturation.
II. In psychology, there is the inheritance of human behavior.
III. The nervous system is composed of organized structures that allow the organism to relate to the external and internal environment.
IV. The brain is the most important organ of the nervous system and is divided into four lobes: frontal, parietal, temporal, and occipital.
a) I and II are correct.
b) II and III are correct.
c) I, III, and IV are correct.
d) II, III, and IV are correct.