21. What selection tool outomotically select ct edges, somple pbrels, modify brush size? crop tool custom shope tool quick selection tool lasso tool

## Step 1<br />The question is asking about a selection tool in image editing software that can automatically select edges, sample pixels, and modify brush size. The options provided are the crop tool, custom shape tool, quick selection tool, and lasso tool.<br /><br />## Step 2<br />The crop tool is primarily used for cropping images, not for selecting edges or modifying brush size.<br /><br />## Step 3<br />The custom shape tool is used to create custom shapes, not for selecting edges or modifying brush size.<br /><br />## Step 4<br />The lasso tool is used for free-form selection, not for automatically selecting edges or modifying brush size.<br /><br />## Step 5<br />The quick selection tool, however, is designed to automatically select edges and sample pixels, and it can also modify brush size. Therefore, the correct answer is the quick selection tool.