What are the linking verb and each verb links

What is the theme of "the story of the fisherman”?

What does a change in medium allow the audience to do?

Which statement best explains the function of the subtitlein this text? a.it provides additional information that narrows the focusof the text.b.it draws attention to important information in the table ofcontents.c.it introduces the various sections that appear withineach chapter.d.it explains the author's primary reason for writing aboutthis topic.correct (a)