(A) Use only one report per page, including much text annotation to summarize findings
(B) Use the first page as a high-level overview, and add additional pages as needed for more detail
(C) Use contrasting colors for each different chart
(D) Use pie charts to compare 10+ segments of a whole
The best practice for designing a report is to use the first page of the report as a high-level overview that shows only the main findings. The inner pages or additional pages contain all the detailed information. This design is also good for sharing reports to users with view or edit access because they can find if there are any problems with the report overview by just looking at the thumbnail image of the report.
This question is a part of the Assessment 4 section of the Introduction to Data Studio Assessment exam. You can find all the answers with detailed explanation for this exam in our Introduction to Data Studio Assessment Answers page.