In CSS, what do you use to group selectors?

The correct choice for grouping selectors in CSS is the comma. When you want to apply the same styles to multiple selectors, you can list them separated by commas. This allows you to efficiently write CSS rules without repeating the same properties for each individual selector. For instance, if you want to apply the same font size to both headings and paragraphs, you could write:

h1, h2, p {

font-size: 16px;

}

In this example, all specified elements (h1, h2, and p) will receive the same styling due to being grouped with commas.

The other options do not serve the purpose of grouping selectors. The colon is used in CSS for pseudo-classes and pseudo-elements, such as `:hover` or `::after`. The semicolon is used to separate multiple declarations within a single rule set, indicating the end of one declaration and the start of another. The dash is typically used within CSS class names or IDs but has no function in grouping selectors.