Final answer:
The correct answer is B: Esther. This book is a historical narrative rather than a poetic book, contrasting with the other options, Ecclesiastes and Job, both of which contain poetic elements.
Step-by-step explanation:
The book of the Bible that is not a book of poetry is B: Esther. While Ecclesiastes and Job are part of the Wisdom Literature in the Bible and are considered poetic and philosophical texts, Esther is a narrative book. It tells the story of a Jewish woman who becomes queen of Persia and saves the Jewish people from genocide. Unlike the books of Ecclesiastes and Job, which contain poetic discourse and wisdom sayings, the Book of Esther is a historical narrative and does not fit into the category of poetry within the Bible.