YOUR TASK. For each of the numbered sentences, select the letter that identifies its type:

a$.$ Simple sentence

c$.$ Complex sentence

b$.$ Compound sentence

d$.$ Compound$-$complex sentence

$17.$ Bottled water consumption rose $2\mathrm{.}2$ percent in volume last year.

$18.$ Because Americans are increasingly health conscious, they are drinking more bottled water than ever before.

$19.$ Americans are drinking fewer soft drinks, and heavy$-$hitters Coca$-$Cola and PepsiCo are affected negatively.

$20.$ Calorie$-$counting Americans are backing away from sugary soda, but they are also fleeing diet soda.

$21.$ Sales volume across the entire beverage industry slid last year; however, smaller players such as Monster Beverage and Red Bull expanded their market share because they appealed to younger consumers.