I wish there were any answer choices if there were any but the answer is - to define the purpose of the essay and show whos point of view it is.
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!)
Actually it's the leopard.
Adjectives are descriptive words that describe other words and answer a question.
Thus, in your sentence, the adjective is the word red, as is tells the reader what color the shirt is.