<u>The right answer is</u>
Activists have coined the slogan “toilet to tap” to discourage the use of wastewater.
<u>Explanation</u>
<em>Toilet-to-tap or direct potable reuse is the future of potable water wherever we have acute water shortages but we still have a perception issue to resolve.</em>
In English, repeating words or phrases is referred to as anaphora. Anaphora is a rhetorical device in which sentences start with the same word or sequence of words. In the example given to us, anaphora is shown by the repetition of the word “hello.”
She doesn't want him to know