Pretty sure its furthermore but it could also be however
A prepositional phrase is a group of words that lacks either a verb or a subject, and that functions as a unified part of speech. It normally consists of a preposition and a noun or a preposition and a pronoun.
Answer:
C - educate staff and students on how to drop, cover and hold on
I think Present is the answer your looking for.
Hope this helps
P.S.
Sorry Clifford Jones for nobody paying attention