microscope parts/adjustment knob\nthe ____________ causes the stage to move upward or downward.\nmultiple…

microscope parts/adjustment knob\nthe ____________ causes the stage to move upward or downward.\nmultiple choice\ncoarse adjustment knob\niris diaphragm\nmechanical stage\nobjective lens
Answer
Brief Explanations:
The coarse - adjustment knob on a microscope is used to move the stage up or down for initial focusing. The iris diaphragm controls light, the mechanical stage holds the specimen, and the objective lens magnifies the specimen.
Answer:
A. coarse adjustment knob