Which of these descriptions indicate that the writer's purpose is to persuade readers?
a: an instructional book describing rules on how to operate a particular laptop
b: a note written by a 13-year-old boy to his parents giving different reasons why they should increase his allowance
c: the short story “legends of sleepy hollow,” in which a headless horseman haunts the local townsfolk of sleepy hollow
d: an essay about the different techniques used in regulating air and water pollution

The correct answer is B. A note written by a 13-year-old boy to his parents giving different reasons why they should increase his allowance

Explanation:

A persuasive text is one that aims at proving a point or convincing the audience to believe and accept an idea or approve an action. Because of this, texts with this purpose include a main point and information such as reasons, statistics, quotes, etc that main at proving that point. Considering this, the description that indicate the purpose to persuade is "A note written by a 13-year-old boy to his parents giving different reasons why they should increase his allowance", because in this texts its author (a 13-year-old boy) aims at convincing its parents about an idea which is that they increase his allowance and also because this text aims at persuading reasons are provided.