The advantage of light microscopy over electron microscopy is that

Electron and light microscopy both are used to visualize the structures that are very small to observe with the naked eyes.

The advantage of using light microscopy over the electron microscopy are:

light microscopes are cheaper in the operating cost as compared to the electron microscope. light microscopes are used to observe the living cells which cannot be observed by using electron microscopes as the specimen is fully dehydrated and it needs to be fixed in case of an electron microscope.