Which term describes an interactive environment used to run Python code in cells?

• A. Jupyter Notebook
• B. Python
• C. Pandas
• D. External Infrastructure

Answer: (A)

An interactive environment that lets you write Python code in small blocks called cells and execute them individually, with the results shown right where you wrote the code. That's Jupyter Notebook. It’s designed for mixing code, outputs, and narrative text in one document, so you can run each cell to see how changes affect results, and you can save or share the notebook easily. The other options don’t fit this description: Python is the language itself, not the interactive environment; Pandas is a library used within Python for data manipulation; External Infrastructure refers to computing resources, not the notebook interface.