Final answer:
Markdown is the type of cell that can be used to document and comment on a process in a Jupyter notebook.
Step-by-step explanation:
The type of cell that can be used to document and comment on a process in a Jupyter notebook is Markdown. Markdown cells allow you to add formatted text, images, links, and other rich content to your notebook. They are commonly used to provide explanations, instructions, or general comments alongside code cells.