Answer:
The part of the cell theory that best supports our ability to do this (which I assume refers to our ability to understand and manipulate cells) is the idea that all living organisms are composed of one or more cells. This concept allows us to recognize the fundamental unit of life and study its structure and function. By understanding the properties of cells and how they interact with one another, we are able to make important discoveries in areas such as biology, medicine, and biotechnology. Additionally, the cell theory's emphasis on the continuity of life and the idea that all cells arise from pre-existing cells helps us to understand how cells reproduce and evolve over time. Overall, the cell theory provides a foundational framework for our understanding of life at the cellular level, which is essential for many fields of science and technology.