Theme-the subject of a talk, a piece of writing, a person's thoughts, or an exhibition; a topic.
(if this helps well its like the meaning about the story or the thing you know)
Answer. "tis some visitor." The reader feels suspense as to whom this visitor may be.
Explanation::He tries to calm himself down, telling himself that "tis some visitor" who has dropped by unexpectedly. But who is this visitor?
(sorry this is so late!)
A true or false statement?
I'm guessing 'opinion'?