Of the options provided,
- B) Being struck by a moving propeller
poses the greatest risk.
A propeller is a rotating structure in the form of a fan that uses energy from the engine of a boat to move it forward. Usually, located at the bottom part of the boat, it is risky for anyone to be near the propeller whether it is in motion or not. When swimming in open water, a safe distance of at least 300 ft should be kept from flags.
It is important that the boat driver or captain informs all of the passengers of his next moves that might be detrimental to them. Warnings should be given to all to steer clear from the propeller area. The captain should also be observant of unsuspecting movements around the area.
Summarily, being struck by a moving propeller poses the greatest risk for a person in the water near an 18-foot boat.
Learn more about boat propellers here:
https://brainly.com/question/20038629
