1. It not advisable to use direct sunlight as light source of the microscope. Which of the following best explains this?
a. it will burn the retina of the eye
b. it can cause blindness
it can cause damage to the eye
d. all of the preceding answers are acceptable reasons​

This sounds like a personal reflection on something you did. it is asking the hardest part, or a part you may have struggled with on an informal interview you must have done. it is also asking advice you'd give someone else for the process of completing an informal interview, so you should write something that would . for example, maybe the first thing they should do, something they should include.

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