Final answer:
GFP (Green Fluorescent Protein) (option 1 )is the fluorescent protein used to track other proteins within cells, illuminating biological processes and interactions.
Step-by-step explanation:
The fluorescent protein obtained from jellyfish that can be used to follow a specific protein through the cell and reveal dynamic activities is called GFP (Green Fluorescent Protein). This protein can be attached to other proteins within the cell to visualize and track their location and movement, providing insights into cellular processes. GFP's utility is particularly highlighted by its application in various scientific disciplines, including cell biology and genetics.