carrying it with both hands. reflecting sunlight to the stage. removing the objectives after you are done. adjusting the coarse focus under high power.
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: Proper use and care of a microscope includes
Possibilities:
- carrying it with both hands.
- reflecting sunlight to the stage.
- removing the objectives after you are done.
- adjusting the coarse focus under high power.

carrying it with both hands.