The most appropriate microscope for studying the internal parts of the cell is ELECTRON MICROSCOPE. The correct option is B.
Electron microscope, which is a compound microscope is usually used to study the internal environment of the cell because of the easiness with which one can easily distinguish the cell organelles from one another. Electron microscope gives great clarification of the cellular components and allow scientists to observe minute details about cellular structures. Electron microscope usually magnify specimens to one million times of their real sizes.
There are so many examples for that in different areas, like biology experiment carried out in our lab recently.
Here's one link : https://www.creative-biogene.com/Services/ion-channel-cell-line-development.html
What we eat (our environment) and genetic variables come together in epigenetics.
Describe epigenetics.
A branch of genetics called epigenetics investigates how variations in the environment might affect how genes are expressed.
DNA methylation, histone alterations, and non-coding RNA pathways are examples of epigenetic mechanisms.
In conclusion, epigenetics is the fusion of genetics and environment.