Answer:
It's called a paragraph.
Explanation:
Paragraphs make up any kind of prose writing. They usually begin with an indentation and contain 4 to 10 sentences. Their length depends on the topic and on the kind of writing. In academic writing, paragraphs should discuss just one particular topic, they should be formed by a main idea and developed using key details. Those key details are ellaborated in several supporting ideas or sentences.
