Reference:
https://support.office.com/en-us/article/overview-of-data-loss-prevention-in-sharepoint-server-2016-80f907bbb9

Explanation

References:
https://github.com/MicrosoftDocs/azure-docs/blob/master/articles/active-directory/users-groups-roles/groups-dyn

Task 1
You need to ensure that administrators can publish a label that adds a footer to email messages and documents.
Task 2
You plan to publish a label that will retain documents in Microsoft OneDrive for two years, and then automatically delete the documents.
You need to create the label.
Task 3
You need to prevent a user name Irvin Sayers from permanently deleting documents that contain the word budget in https://LODSe44454.sharepoint.com./sites/leadership.
Task 4
You plan to add a file named ConfidentialHR.docx to a Microsoft SharePoint library.
You need to ensure that a user named Megan Bowen is notified when another user accesses ConfidentialHR.xIsx.
Task 5
You need to create a policy that identifies content in Microsoft OneDrive that contains credit card numbers.
Task 6
You discover that Microsoft SharePoint content is shared with users from multiple domains.
You need to allow sharing invitation to be sent only to users in an email domain named Contoso.com.
Task 7
Your company plans to merge with another company.
A user named Debra Berger is an executive at your company.
You need to provide Debra Berger with all the email content of a user named Alex Wiber that contains the word merger.
Task 8
You need to ensure that unmanaged mobile devices are quarantined when the attempt to connect to exchange Online.
Task 9
You need to implement a solution to manage when users select links in documents or email messages from Microsoft Office 365 proPlus applications or Android devices. The solution. Must solution must meet the following requirements:
* Block access to a domain named fabrikam.com.
* Store information when the users select links to fabrikam.com
Task 10
You need to configure organization to automatically quarantine all phishig email messages.
Task 11
You need to ensure that all users must change their password every 100 days.
Task 12
You need to ensure that a user named Grady Archie can monitor the service health of your Microsoft 365 tenant. The solution must use the principle of least privilege.

Explanation

References:
https://github.com/MicrosoftDocs/azure-docs/blob/master/articles/active-directory/users-groups-roles/groups-dyn

See explanation below.
Explanation
1. In the Security & Compliance Center > left navigation > Data loss prevention > Policy > + Create a policy.
2. Choose the U.K. Data Protection Act template > Next.
3. Name the policy > Next.
4. Choose All locations in Office 365 > Next.
5. At the first Policy Settings step just accept the defaults,
6. After clicking Next, you'll be presented with an additional Policy Settings page Deselect the Show policy tips to users and send them an email notification option.
Select the Detect when content that's being shared contains option, and configure the number instances to be 10.
Select the Send incident reports in email
Select the Choose what to include in the report and who receives it link to add Allan Deyoung as a recipient.
7. > Next
8. Select the option to turn on the policy right away >
9. Click Create to finish creating the policy.
Reference:
https://docs.microsoft.com/en-us/microsoft-365/compliance/create-test-tune-dlp-policy?view=o365-worldwide
https://docs.microsoft.com/en-us/microsoft-365/compliance/data-loss-prevention-policies?view=o365-worldwide
https://docs.microsoft.com/en-us/microsoft-365/compliance/what-the-dlp-policy-templates-include?view=o365-w