What does sentinel mean

What is most likely to be the author’s intended use of eye rhyme in this excerpt

Must read story will give if ! in “perseverance,” which theme is reflected in the lines, “life’s field will yield as we make it / a harvest of thorns or of flowers”? a: life is a field in which flowers and thorns will grow. b: accept what you are given, because you cannot change it. c: your life is the result of the work you put into it. d: working together people achieve their goals in life.

Which type of poetry often begins by announcing the subject and asking a muse for ? a. epic poetry b. dramatic poetry c. sunnets d. ballads