Final answer:
Staining is the method used to enhance the visibility of cellular components when using a light microscope, though it typically results in the death of the cells.
Step-by-step explanation:
When viewing a specimen through a light microscope, scientists often employ a technique called staining to make it easier to see individual components of cells. Since individual cells are generally transparent, their components are not easily distinguishable unless they are colored with special stains. However, it's important to note that while staining enhances the visibility of cellular structures, it usually kills the cells, making it unsuitable for observing living cells.