Concept: The paperclip icon is the universal symbol for attaching files in most e-mail clients.
Explanation:In most e-mail clients such as Gmail, Outlook, and Yahoo Mail, the compose window provides a paperclip icon or an "Attach File" button.
Clicking this icon opens a file explorer or dialog box.
The user can browse local storage or cloud drives, select the required file, and confirm the selection.
The file is then uploaded and attached to the e-mail being composed.
This feature supports many formats, including documents (.docx, .pdf), images (.jpg, .png), and compressed folders (.zip).
Most modern web-based clients also support drag-and-drop to attach files directly into the compose window.
Typical attachment size limits are around 25 MB per e-mail for Gmail and Outlook.
For larger files, cloud storage links such as Google Drive or OneDrive are recommended.
Executable files like .exe or .bat are often blocked for security reasons.
Options A, B, and D are incorrect because they do not match the standard attachment process in e-mail clients.
Answer: The correct answer is Option C: Click the 'Attach File' or paperclip icon and select a file.