What is one of the benefits of using GFP as a reporter in molecular biology?

Using GFP as a reporter in molecular biology provides a significant advantage by allowing researchers to visualize biological events in real time. This capability is crucial for observing dynamic processes such as protein localization, gene expression, and cellular signaling without the need for destructive sampling or extensive processing steps that could alter the biological system being studied.

GFP emits a bright green fluorescence when exposed to ultraviolet or blue light, which enables scientists to track the protein of interest within living cells. This real-time observation facilitates a deeper understanding of cellular behaviors, interactions, and mechanisms in their natural environments, thereby enhancing experimental outcomes and interpretations.

In contrast, the other options are less aligned with the benefits of GFP. Increasing costs or complicating processes generally detracts from its utility, and the requirement for additional staining would limit its use as a straightforward and effective visualization tool.