Final answer:
To select multiple nonadjacent messages, you should hold down the Ctrl key (Command key on Mac) while clicking on the messages you want to move. This lets you selectively choose emails to organize or move between folders.
Step-by-step explanation:
To select multiple nonadjacent messages to move, hold down the Ctrl key (Command key on Mac) as you click the messages. This action allows you to select multiple messages that are not next to each other, which can be very useful for organizing your emails or moving them to different folders. When the Ctrl key is held, each click will either select or deselect an individual message, giving you precise control over which emails you want to group together for moving.