Answer : 3. "Running more than one window on one screen"
Explanation :

Following are some of the uses of Snap Assist-

1. View two windows at once: Snap Assist allows you to keep two windows on the screen at the same time. It can help you perform tasks like comparing two documents, reviewing information on a web page, and taking notes while watching a video.

2. See a lot of information: Snap Assist can help you organize a lot of information on the screen. For example, you can snap one window to one half of the screen and another window to the other half. This lets you view information on two documents or web pages at the same time.

3. Organize windows: Snap Assist can help you organize your windows in a consistent way. For example, you can snap one window to always be on the left side of the screen and another window to always be on the right side of the screen. This allows you to keep your workspace more organized and organized.