An event or something of crucial importance that changes the flow or then later develops into something else. wars can be very pivotal and maybe even fights or deaths
The verb specified from the sentence is a present participial.
Present participial is the form of a verb, ending in -ing in English, which is used in forming continuous tenses, e.g., in I'm thinking, alone in nonfinite clauses, e.g., in sitting here, I haven't a care in the world, as a noun, e.g., in good thinking, and as an adjective, e.g., in running water<span>.
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I hope my answer has come to your help. God bless and have a nice day ahead!
Answer:
A. water <u>or </u>C. boats