Question

What technological advancement was necessary before scientists could begin to observe cells?
A. invention of the magnifying glass
B. invention of the microscope
C. invention of the telescope
D. invention of the thermometer

Answer 1

b is the correct answer.
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Answer 2

Invention of the microscope was an advancement that was necessary before scientists could begin to observe cells.

Explanation:

• Microscope is an instrument which enlarges the object and also that object which can't be seen by us from naked eyes.
• The cells photograph which is taken with the help of microscope is called micro-graphs.
• The most common and familiar microscope is optical or light microscope.
• Light microscope is consisted of a single lens. The most effective microscope is electron microscope.
• In "process of image formation" the electron microscope uses beam of electron.

Learn more about Microscope:

What is electron microscope?

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What is electron microscope?

https://brainly.in/question/327300