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Answer:
The answer is the first option, centrifuge.
Explanation:
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The machine, which separates the components of the blood based upon their densities is centrifuge.
What is a centrifuge?
It is a machine, which works on the principle of centrifugation, that is, a mechanical process that comprises the application of centrifugal force to distinguish particles from a solution based on their shape, size, medium viscosity, density, and rotor speed.
In centrifuge, the centrifugal force is utilized to distinguish the constituents of blood, that is, the platelets, the red blood cells, and plasma on the basis of their densities. In the process, the red blood cells settle at the bottom in the form of precipitate, the platelets above them, and the white blood cells and the plasma at the top.
Thus, the machine is centrifuge.
Find out more information about centrifuge here:
https://brainly.com/question/4602007