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 is a lightweight markup language that allows you to add formatted text, images, links, and other elements to your Jupyter notebook. With Markdown cells, you can provide explanations, instructions, or comments to help document and clarify the steps of a process.