Final answer:
The formatting rule that is incorrect for enumerated items is indenting enumerated items 1" from the left margin. Typically, you start at the left margin and indent subsequent lines one-half inch.
Step-by-step explanation:
The correct formatting rules for enumerated items typically include indenting subsequent lines if needed, keeping a consistent space between items, and aligning the text properly. However, the option that does not represent a standard formatting rule for enumerated items is c. indent enumerated items 1" from the left margin. The common practice is to begin each entry at the left margin and indent subsequent lines one-half inch, but not the entire enumerated item.
For block formatting, such as in a business letter or block quotations, the text should be left-justified, single spaced within paragraphs with double spacing between paragraphs, and set off by indenting without quotation marks for longer quotations.