Nina wants to create a digital backup of her holiday videos to view later. What two of these devices could she use?

scanner
memory card
external hard dive
printer
graphics card

Memory Card, or a External Hard Drive

A memory card is known to be a small storage medium which is generally used to store information. The most common type of data that's being stored on a memory card include videos, pictures, audio and other types of file formats. It's also used for smaller, portable as well as remote computer devices.

An external hard drive is a device which is plugged into your machine to give almost-immediate storage space, without the need to open your computers internal storage and make upgrades. External drives are portable storage devices typically used to store data such as photos, videos, and documents.

Explanation:

This is the answer because if u know what the others are, it narrows the possible answers down. such as a printer. A Printer is used to print images on paper. A Graphics Card is responsible for rendering an image to your monitor. And so on.