From the question you can immediately infer that it's either B or D, as A and C basically mean the same thing and it isn't anything related to a microscope. I can tell you now that you don't need an electron microscope to see cells, they're only required for the atomic level.
Therefore, the answer is B, as you can't see cells without a microscope but you only need a light microscope, not an electron microscope.
Answer:
The space inside the ear drum is called the middle ear. Three of the smallest bones of the body are found in the middle ear; they are called the malleus, the incus and the stapes. These bones are also known as the hammer, anvil and the stirrup. The medical term for all three bones together is the middle ear ossicles.
Explanation:
Cell Theory is an appropriate term because it yet to be confirmed as well as a way to confirm it. However, it is believed to be true do the the amount of things that back up this theory. It also supports multiple other theories that stem from Cell Theory.
C final answer cells, organs, tissues, organ systems
Physical - Sodium is solid at room temperature
Chemical - sodium is hydroscopic in nature
