Which of the following describes an advantage of using a light microscope instead of an electron microscope

Light microscopes can be used to observe any type of object, but using an electron microscope to look at metallic objects would damage the microscope.
Light microscopes can be used to observe live specimens, but preparing a specimen for electron microscopy would kill it.
Light microscopes have much higher magnification power than electron microscopes, as long as a high resolution image is not needed.

Genetic engineering is the answer.