What is the designation associated with West's Federal Practice Digest?

The designation associated with West's Federal Practice Digest indeed corresponds with the correct answer, which identifies a specific reporter volume and page number. In this case, the format "F P D" stands for Federal Practice Digest, while the number that follows indicates the volume and the additional numbers are used to reference the specific page within that volume.

The Federal Practice Digest serves as a comprehensive index for federal court decisions and is crucial for legal research, as it helps lawyers and legal professionals locate relevant cases and statutes efficiently. The volume and page number provided in the correct designation enable users to pinpoint the exact location of the legal material they require.

The other designations do not match the official naming conventions or numbering associated with West's Federal Practice Digest, which confirms why the selected answer is the most accurate representation of that legal publication.