Need help ignore the bottom part of the picture

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)

What is a word that is stronger than "beautiful"

What are some funy/catchy titles for my essay. the topic is tap water and its negative impacts