The answer(s) to this question is Option D or Option B.(Fourth option, Second Option)
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Note2;This answer is the one you call "Hard" due to two options,Get help from another person and ask them which of these is correct if you don't trust my answers. Thank you
I believe it is B. Key details. Details back up the main idea
Because those broken equipment and glassware might eventually hurt other people around it.
You should tell your teacher (because your teacher is responsible for the well being of all the students in the class) and so he/she could bring up that problem to the school management and replace that equipment/ glassware for the new one.
The vibration of almost anything