What is a primary function of the design capabilities in Adobe Express regarding PDF files?

A primary function of the design capabilities in Adobe Express concerning PDF files is the ability to edit text and images directly from the PDF. This feature allows users to manipulate and customize the content within their PDF documents, making it possible to revise information, update visuals, or reorganize elements without having to start from scratch or convert the file to another format for editing.

By supporting direct editing, Adobe Express simplifies workflows and enhances productivity for users who frequently work with PDFs, as they can make necessary adjustments quickly and efficiently. This capability is particularly beneficial for anyone who needs to produce high-quality documents and ensure that the final output meets their design standards.

Other options may touch upon aspects of PDF handling, but do not provide the comprehensive editing capabilities that Adobe Express offers, which makes direct editing a standout feature.