Answer: Green Fluorescent Protein (GFP)
Step-by-step explanation:
GFP acts as a phenotypic marker. It will cause the cell to produce fluorescence if it was transformed into the cell properly.
The plasmid also contains an ampicillin resistance cassette which produces Beta-lactamase to allow the cell to grow in/on media with ampicilin typically up to 100 ug/mL.