The synopsis of a formal report is

A) a brief overview of the report's most important points.
B) a fully developed "mini" version of the report.
C) usually from one to five pages in length.
D) a list of all the headings and subheadings in the report.

The synopsis of a formal report is a brief overview of the report's most important points. It typically summarizes the key findings, conclusions, and recommendations presented in the report, and provides readers with an overview of the main ideas and arguments. The length of a synopsis can vary depending on the length of the report, but it is usually shorter than the full report itself.