Question 1

CSS3 is the language to create a border with rounded corners using in-line markup.

To create a border with rounded corners on a web page using in-line markup, a developer should use CSS3. This language provides the necessary properties to achieve rounded corners directly within HTML elements.

A) Java

Java is a programming language primarily used for building standalone applications and server-side components. It does not provide direct capabilities for styling web page elements such as borders or corners, making it an inappropriate choice for this task.

B) HTML5

HTML5 is the markup language used for structuring content on the web. While it can create elements that may have borders, it does not have built-in capabilities to style those borders with rounded corners. Therefore, it cannot fulfill the requirement stated in the question.

C) CSS3

CSS3 is the correct choice for this task as it includes specific properties like `border-radius` that allow developers to create rounded corners on borders. Additionally, it can be applied in-line using the `style` attribute, making it suitable for the requirement.

D) XML

XML is a markup language designed for data representation and does not include styling capabilities for web page elements. It is not used for visual presentation on web pages, making it irrelevant for the creation of borders with rounded corners.

Conclusion

CSS3 is definitively the correct answer because it provides the functionality needed to style borders with rounded corners using in-line markup. The other options—Java, HTML5, and XML—do not offer the appropriate styling properties or capabilities needed for this specific requirement.