Which report would a System Admin use to help understand a user's recent activity, such as views, comments, edits, and assets created?

The correct choice is the Activity Summary Report. This report is specifically designed to track and summarize a user's activities within Smartsheet, including actions such as views, comments, edits, and any assets created. The data provided in the Activity Summary Report gives system administrators a clear overview of user engagement and activity, allowing for insights into how users are interacting with various sheets and projects.

In contrast, the Login History Report primarily focuses on user logins, detailing when and how often a user has accessed Smartsheet but does not provide insights into the specific activities or contributions made during those sessions. The Sheet Access Report details permissions and access levels of users to specific sheets but does not capture detailed activity data. The User Type Report identifies the types of users within an organization based on their roles but does not track user activity at all. Therefore, for comprehensive insights into user interactions and contributions, the Activity Summary Report stands out as the most relevant choice.