Explanation:

In Windows Explorer, to view the contents (files and subfolders) within a folder, the standard action is to 'Click on it'. This action opens the folder and displays its contents in the main pane of the Explorer window. Options (b) 'Collapse it' would hide the contents if it's an expanded tree view. Options (c) 'Name it', (d) 'Give it a password', and (e) 'Rename it' are actions related to modifying the folder's properties or identity, not displaying its contents. Therefore, 'Click on it' is the correct and most direct way to display the contents.