Final answer:
Block formatting in English includes extra spacing between lines with each paragraph indented or with extra space between each paragraph.
Step-by-step explanation:
In English, the format that includes extra spacing between lines with each paragraph indented or with extra space between each paragraph is called block formatting. In block formatting, everything should be left-justified and the letter should be single spaced, with double spacing between each paragraph. The beginning of each paragraph should not be indented. This format is commonly used in business letters and is often required in academic essays as well.