Which best shows that the author's purpose is to explain how to tune a guitar?

Question

A. The author claims that the string at the top is thickest.

B. The author outlines the steps that readers should take to tune a guitar.

Answer 1

C. The author provides a detailed description of the different types of guitars.

D. The author discusses the history of the guitar and its influence on music.

Answer: B. The author outlines the steps that readers should take to tune a guitar.