Best option is A,
Due to the fact that there are many sensitive equipments and dangerous chemicals in the
lab, undergraduates are not permitted there without supervision.
a) Due to the fact that there are many sensitive equipments and dangerous chemicals
b) Because there is much sensitive equipment and many dangerous chemicals --> verb is wrong must be are, bcz we have compound noun here.
c) Since there is sensitive equipment and much dangerous chemicals ->> again is
d) Existing much sensitive equipment and many dangerous chemicals there --> participle with no proper aim.
e) Be it that there are much sensitive equipment and dangerous chemicals --> weird be it that
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