The answer is D. To be able to remember the important parts of what you just read.
Simple subject = boat
The simple subject is the specific subject without any modifiers that describe the subject.
Complete subject = A small boat
The complete subject includes the simple subject and any modifiers. The modifiers describe the subject and are usually adjectives.
Simple predicate = travels
The simple predicate is the main verb. in this case it is an action that tells what the boat is doing.
Complete predicate = travels there every hour.
The complete predicate is the main verb along with any modifiers and other details that describe what is going on.
Not sure what you're trying to ask, but that statement is correct. Using the mass and volume of a substance, we can determine the density of a substance which is a physical property.
