the bottom of the microscope, used for support\nobjectives\nbase\ntube\nstage clips\nepicece\ndiaphram\nlight…

Brief Explanations:

The base of a microscope is located at the bottom and provides support for the entire instrument. Other parts like objectives are for magnification, the tube connects parts, stage clips hold specimens, the eyepiece is for viewing, the diaphragm controls light, the light - source illuminates, the nose - piece holds objectives, adjustment knobs focus, the arm is for carrying and support in part, and the stage is for placing specimens. But the key part for bottom - based support is the base.

Answer:

base