For which of the following reports is Excel the publication format?

The correct answer is based on the understanding that the PERSTEMPO Report, which stands for Personnel Tempo Report, utilizes Excel as a publication format. This report typically provides data regarding personnel activity levels and can involve tracking and analyzing various metrics related to personnel deployment over time. Excel's strengths in handling numerical data and allowing for extensive analysis and visualization make it particularly suitable for such reports.

In contrast, the other options, while important, are often disseminated in different formats that may not specifically utilize Excel. For instance, these reports may be generated in formats better suited for distribution or review within military or personnel systems, which may require different data presentation tools. Thus, the PERSTEMPO Report stands out as the one specifically designed to leverage Excel for its comprehensive data analysis and reporting capabilities.