What is Zoology?

I- Zoology is the scientific study of animals.
II- Zoology studies animal morphology to explain its diversity and evolutionary significance.
III- Zoology studies the variety of factors and means of life that have influenced animal evolution and contribute to the dispersion of animals on the earth's surface.
IV- Zoology studies only the anatomy of animals.
a) Only I and II are correct.
b) Only II and III are correct.
c) Only I, II, and III are correct.
d) Only III and IV are correct.