Write about each topic one at a time. Be sure to not intermix two separate ideas in order to maintain clarity throughout. Do your best to stay on task and not get distracted or go off on unneeded tangents. I would also suggest to separate each topic/idea into its own paragraph indenting each time. That's my advice on keeping your prose writing clear and concise. Hope this helps!
-J
It depends on which word is underlined.
If the underlined word is <em>boat, </em>then it is used as A. predicate nominative in this sentence.
A predicate nominative is a noun following a copulative/linking verb.
The linking verb in this sentence is <em>is, </em>and the noun following it is <em>boat. </em>