Who moderates the XPress online newspaper?

The correct choice is Mr. Mostoller, as he serves as the moderator of the XPress online newspaper. Moderators typically oversee the content, ensuring that it aligns with the values and objectives of the publication. This role involves guiding contributors, managing editorial processes, and fostering an environment conducive to quality journalism. In the context of the XPress online newspaper, Mr. Mostoller's oversight and direction are crucial for maintaining the publication’s standards and helping it effectively communicate with its audience. The other individuals listed may have roles within the organization or may contribute in other capacities, but Mr. Mostoller's specific designation as the moderator is key to understanding the leadership dynamics of the publication.