Is anyone down to talk

In concrete mixers what seems to be the speakers feeling about the concrete mixers

If i have enough money, buy a car. a, will b, shall

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)