What permissions control access to PDF capabilities?

The correct answer reflects that Tab Visibility and Object Security are fundamental components that manage access to PDF capabilities. In systems focused on document management and security, PDF functionalities are often restricted based on what tabs are visible to users and how objects within those documents are secured.

Tab Visibility controls which users can see certain features and functions related to PDF handling, ensuring that access is restricted based on predefined criteria. This means that if a user does not have visibility of a specific tab associated with PDF functionalities, they cannot interact with those capabilities.

Object Security involves restricting access to the content within PDF files themselves, ensuring sensitive materials are only accessible to authorized users. This layer of security is critical in maintaining the integrity and confidentiality of the data contained in those documents.

Understanding how these elements interact helps users manage and enforce proper access to PDF capabilities effectively. The other choices, while they may deal with user permissions, do not specifically address the unique interactions set up by visibility of tabs and the security of objects within PDFs.