Public -awareness campaigns about the need to reduce single-use plastics can be successful,says researcher Kim Borg of Monash University in Australia,when these campaigns give consumers a choice: for example, Japan achieved a 40 percent reduction in plastic-bag use after cashiers were instructed to ask customers whether __ wanted a bag. Which choice completes the text so that it conforms to the conventions of Standard English? A) they B) one C) you D) it 19

## Step 1<br />The sentence is about the actions of the customers, so the pronoun that refers to the customers should be used. The options are "they", "one", "you", and "it". <br /><br />## Step 2<br />The pronoun "they" is used to refer to a group of people, in this case, the customers. <br /><br />## Step 3<br />The pronoun "one" is used to refer to a single person, which is not suitable in this context. <br /><br />## Step 4<br />The pronoun "you" is used to refer to the person being spoken to, which is not suitable in this context. <br /><br />## Step 5<br />The pronoun "it" is used to refer to a non-living thing, which is not suitable in this context. <br /><br />## Step 6<br />Therefore, the correct answer is "they".