How must case names and citation signals be formatted in documents?

The correct choice indicates that case names and citation signals should be presented in italics or underlined. This formatting is important because it helps to distinguish legal references from other text within a document. Italicizing or underlining case names and citation signals visually sets them apart, which enhances readability and helps to indicate their significance within legal texts. This convention follows the typical standards of legal writing, where emphasis is needed to indicate the titles of cases or important references that are integral to understanding the arguments being presented. Proper adherence to these formatting rules contributes to professionalism and clarity in legal documents.