In MS Excel, a range of cells is denoted by the colon (:) symbol between the starting and ending cells. Thus, A1:B5 represents all cells in the rectangular block from cell A1 to cell B5, including all the cells in between.

Using the 'Save As' option in applications like MS Word or MS Excel allows you to save the current document under a new name or in a different location. When you do this:

• The original document remains unchanged.
• A new copy is created with the new name or location specified, leaving the current document intact.

Downloading is the process of transferring files from a computer on the Internet to your local computer.

The other options are not correct:

• Uploading: The reverse process of sending files from your local computer to another computer or server on the Internet.
• Forwarding: Typically refers to sending an email or message to another recipient, not transferring files.
• FTP (File Transfer Protocol): A protocol used to transfer files over the Internet, but not the process itself of receiving files.

Therefore, the correct term for transferring files from a computer on the Internet to your own computer is downloading.

In MS Word, pressing Ctrl + L aligns the selected text to the left margin of the document. It is a shortcut for left alignment, which is the default text alignment in most documents.

A pixel (short for "picture element") is the smallest visual element on a video monitor. It is the smallest unit of a digital image or display, and screens are composed of many pixels to form images.