Read the description.

Jeremy is writing a report about the life cycle of a butterfly, and decides to include a diagram of a caterpillar gradually transforming into a butterfly.
Why is the best element for Jeremy to include in his report?

A. It allows the reader to see the entire process, from beginning to end, in one quick glance.
B. It allows the reader to see how some caterpillars turn into butterflies, while others turn into moths.
C. It allows the reader hear as well as see the process, and helps the reader retain the information.
D. It allows the reader to understand the transformation process at the cellular level.