The answer is (D) microscopic . You can remember this, because the name is very close to "microscope," an instrument used to greatly magnify and observe tiny organisms and objects.
The answer to the question is (D) microscopic , which refers to objects that cannot be seen by the naked eye and require magnification, typically through a microscope. Examples include bacteria and cells, which are essential in biological studies. Microscopes, such as light and electron microscopes, are used to view these tiny organisms and structures.
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