Read the following text:
The sailboat needed to turn to the right to avoid hitting a log. Jeff turned the steering wheel frantically. Finally, the rudder turned, and the sailboat avoided the log, and Jeff breathed a sigh of relief.
What is the meaning of the word rudder as it is used in the sentence? (2 points)
A digital tool that is used to measure the depth of water
A large piece of a tree underwater that is a danger to boats
A part of the sailboat that changes direction of the boat
A type of life jacket that must be worn in an emergency