Which CSS3 selector can you use to apply a style to the first paragraph of every container in a Web page?

• A. div:first-of-type
• B. p:nth-of-type(1)
• C. p:first-of-type
• D. p:first-child

Answer: (C)

Targeting the first paragraph in every container uses the :first-of-type pseudo-class. This selector finds, within each parent element, the first element that matches the specified type. When you apply it to the paragraph selector, you style the first p inside every container on the page, regardless of what other elements come before it. This makes the styling robust across sections, divs, articles, and other containers.

Div:first-of-type would styling the first div in each container, not the first paragraph, so it doesn’t fit the goal. p:first-child would only match a paragraph if it happens to be the very first child of its container, which isn’t reliable if other elements appear before it. p:nth-of-type(1) would also select the first paragraph in each container, but using the explicit first-of-type communicates intent clearly and is the conventional way to express “the first paragraph in each container.”