How should people wearing spectacles work with a microscope?
They should keep on wearing their spectacles.
They should never use the microscope.
They should take off their spectacles.
They may either put on their spectacles or they may take off their spectacles.
Correct answer: C
Hence, the correct option is option C that they should take off their spectacles.
The picture given here shows a person wearing 'half-moon' spectacles. What sort of eye-defect do you think he has ? Why are these particular spectacles useful to him ?