Final answer:
To exclude rows with fewer than 10 visits, the correct technique is to apply a table filter, as it allows setting conditions to show only the desired rows.
Step-by-step explanation:
To exclude rows with fewer than 10 visits from a report table, the most effective technique would be to apply a table filter. This method allows you to set a specific condition which in this case could be visits >= 10, and then it will automatically exclude all rows that do not meet this condition. Using a pivot table with two dimensions or adding primary or secondary dimensions would not directly allow you to exclude rows based on the number of visits. Sorting the table by sessions from highest to lowest would not exclude the rows but would just rearrange them.