What is the main body of a piece writing or any various forms in which exists such as book poem an article short story?

The main body of a piece of writing is the section that contains the heart of the author's message. It is the part of the writing that develops the main idea or argument, and provides the reader with the most important information. Depending on the type of writing, the main body may be structured in different ways, but it typically includes a number of key components.

1. Introduction: The introduction is the first section of the main body, and it sets the stage for what will come next. It provides a brief overview of the topic of the writing, and introduces the author's main idea or argument.

2. Body paragraphs: The body paragraphs are where the author presents and develops their main ideas and arguments. Each body paragraph typically focuses on a specific aspect of the topic, and uses evidence and examples to support the author's claims.

3. Conclusion: The conclusion is the final section of the main body, and it wraps up the writing by summarizing the main points and leaving the reader with a final thought or impression.

The structure of the main body may vary depending on the type of writing, but these key components are common to most forms of written communication. By organizing their writing in this way, authors can ensure that they are effectively conveying their message to the reader.