Explanation:

Step 1 - Understanding the requirement
The task is about applying Microsoft Purview Information Protection sensitivity labels to sensitive images and documents using the Azure Information Protection (AIP) unified labeling client.
Sensitivity labels in Purview can be applied in Microsoft 365 apps (Word, Excel, Outlook, PowerPoint), but to label non-Office files like images, PDFs, and other documents, users must use the AIP unified labeling client.
With the AIP client installed, labels can be applied directly in File Explorer by right-clicking the file.
Step 2 - Device compatibility
The AIP unified labeling client runs on Windows devices only.
In the question's context (based on the provided dropdowns), all listed devices (Device1, Device2, Device3) are compatible Windows endpoints.
Therefore, the AIP client can be deployed to all three devices.
Step 3 - How users apply labels
For Office documents # labels can be applied from the ribbon inside Word, Excel, PowerPoint.
For other file types (images, PDFs, text files, etc.) # labels must be applied using File Explorer via the AIP client.
# Reference:
Install and use the Azure Information Protection unified labeling client Apply sensitivity labels to files and emails in Microsoft Purview