Which tool allows you to select a region by painting over it and relies on edge detection to refine the selection?

Which tool allows you to select a region by painting over it and relies on edge detection to refine the selection?

• A. Magic Wand Tool
• B. Quick Selection Tool
• C. Lasso Tool
• D. Paint Bucket Tool

Answer: (B)

This is about selecting a region by painting over it and letting the edge-detection refine the boundary as you go. The tool that fits this description is the Quick Selection Tool. You paint over the area you want, and Photoshop uses edge-detection to grow the selection to include neighboring pixels that match the sampled area, snapping to object edges to create a natural boundary. It’s fast for irregular shapes because you don’t trace every edge—just paint, and the boundary updates as you brush. You can adjust the brush size, switch to add or subtract modes, and enable Smart Radius to improve edge detection on tricky edges. The other tools don’t paint to refine while detecting edges: the Magic Wand selects by clicking with a tolerance and doesn’t continuously refine as you paint, the Lasso tools require manual outlining, and the Paint Bucket fills rather than selects.

This is about selecting a region by painting over it and letting the edge-detection refine the boundary as you go. The tool that fits this description is the Quick Selection Tool. You paint over the area you want, and Photoshop uses edge-detection to grow the selection to include neighboring pixels that match the sampled area, snapping to object edges to create a natural boundary. It’s fast for irregular shapes because you don’t trace every edge—just paint, and the boundary updates as you brush. You can adjust the brush size, switch to add or subtract modes, and enable Smart Radius to improve edge detection on tricky edges. The other tools don’t paint to refine while detecting edges: the Magic Wand selects by clicking with a tolerance and doesn’t continuously refine as you paint, the Lasso tools require manual outlining, and the Paint Bucket fills rather than selects.