In Some Ways Biology Is the Most Demanding of All

In some ways biology is the most demanding of all sciences. This is partly because living systems are so complex and partly because biology is a multidisciplinary science that requires a knowledge of chemistry, physics, and mathematics. And of all the sciences, biology is the most connected to the humanities and social sciences. Neil A. Campbell and Jane B. Reece, Biology, 6^th edition

A) Argument; conclusion: Living systems are so complex.
B) Argument; conclusion: Biology is a multidisciplinary science ... mathematics.
C) Nonargument.
D) Argument; conclusion: In some ways biology ... of all sciences.
E) Argument; conclusion: Of all the sciences ... humanities and social sciences.