(A) The total number of visits to your website
(B) Users that had at least one session on your site in the given date range
(C) Users that landed on the homepage of your website
(D) Users who have signed up to an email newsletter on your website
The Users metric refers to the number of visitors who had at least one session on your site in the given date range. If a single user visits your website X number of times(X = any whole number) in a given date range then that user will be counted as only 1 user and his other visits will be recorded in the Sessions metric instead of the Users metric.
This question is a part of the Assessment section of the Google Analytics For Beginners Certification course. You can find the answers with full explanation for all the assessment questions on our Google Analytics For Beginners Assessment 2 Answers page, and Google Analytics for Beginners Assessment Answers page.