Which Mac shortcut listed in the material selects a portion of the screen for a screenshot?
Answer
Command+Shift+4
Explanation
### Why this is right
The material says Command+Shift+4 brings up a crosshair so the user can drag to select a screen portion.
### The concept
The listed Mac screenshot shortcuts differ by capture area. Command+Shift+3 captures the full screen; Command+Shift+4 lets the user select an area.
### The other options
- **B. Command+Shift+3**: captures the full screen rather than a selected portion.
- **C. Command+S**: saves a file.
- **D. Command+W**: closes a window in the listed shortcut table.
### Terms
- **Command**: a Mac keyboard key used in many shortcuts.
### Remember
On Mac, the material assigns full screen to 3 and selected area to 4.