DRAG DROP
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You need to identify which report must be used to view previous tasks performed in Office 365.
Which type of report should you use for each task? To answer, drag the appropriate reports to the correct tasks. Each report may be used once, more than once, or not at all. You may need to drag the split bar between panes or scroll to view content.
Answer: 
Explanation:
Account creation falls under the user administration activities that are logged by the audit log.
Password policy modification falls under the Azure AD directory and domain related activities that are logged by the audit log.
The Office activations report is available in the Office 365 admin center.
Explanation:
https://support.office.com/en-us/article/Search-the-audit-log-in-the-Office-365-Security-Compliance-Center-0d4d0f35-390b-4518-800e-0c7ec95e946c?ui=en-US&rs=en-US&ad=US#PickTab=Activities
https://support.office.com/en-us/article/Activity-Reports-in-the-Office-365-Admin-Center-0d6dfb17-8582-4172-a9a9-aed798150263