1. At Jack Johnson concerts, plastic bottles are not sold.
2. Fans will be encouraged to bring reusable water bottles to the concerts.
3. Millions of bottles a year are produced by manufacturers.
4. Too much plastic has been used by us. (or don't include the "by us")
5. Most of our plastic water bottles are not recycled by us. (or don't include the "by us")
6. Animals are harmed by plastic waste.
The correct answer is D. : Does someone... know.
Someone needs a singular for of the verb, as it refers to a single person.
In A. the mistake is that "Few" refers to multiple people so it needs a plural form, in B. one (of those...) requires singular and C. "several" requires plural
- and they all have the wrong number.
The word audience is a noun so the answer would be Noun.
Diction tells a lot and highly contributes to the meaning and tone of a poem because its your word choice. The different words you use can completely change your poem.